JP6957594B2 - Formulations for LED encapsulants - Google Patents

Description

Tech. It relates to an LED comprising a sealing material. Furthermore, the present invention relates to a method for preparing a formulation suitable for preparing a high refraction encapsulating material for an LED. The present invention further relates to a method for manufacturing an LED by using the above-mentioned formulation. The formulations according to the invention are particularly suitable for the preparation of encapsulating materials for LEDs, especially phosphor conversion LEDs (pc-LEDs) having a high refractive index converter layer. In addition, the formulation allows for more efficient workability with faster cure rates. The encapsulating material according to the invention provides a high index of refraction, which exhibits a low temperature dependence, thereby increasing light output and color point resistance of high performance LEDs. Preparation becomes possible. In addition, the encapsulating material exhibits improved barrier properties against water vapor.

Background and Description of Background Technology There is a high demand in the LED industry for suitable encapsulant materials for LEDs. Such materials face some difficulties:
i. The encapsulant material must withstand high temperatures without degrading its mechanical and optical properties.
ii. The encapsulant material needs to have the advantageous properties of high refractive index, in addition to optical transparency and resistance to high temperatures.
iii. The encapsulant material needs to have high resistance to high intensity radiation.
iv. The encapsulating material needs to be able to vary the modulus of elasticity over a wide range, from very soft gel materials to hard plastic materials.

LEDs can generate high heat flux and high light flow velocities. Like encapsulants, LED packages need to function stably when exposed to heat and / or radiation (ultraviolet (UV) and / or visible (VIS) radiation). Light-sealing materials play an important role in improving the performance of LEDs. So far, many encapsulants suffer, among other things, a reduction in transmittance during the life of the LED's use. In the following, the advantages and disadvantages of the main encapsulants will be shown. Silicon-derived materials currently dominate the market share due to their advantages in optical, mechanical, and aging properties. Silicone reflectors have improved brightness properties and exhibit better thermal and photothermal resistance when compared to conventional materials. With reflectors derived from silicone, there is a slight reduction in the light intensity of the LEDs; they reflect light with high efficiency greater than 98%. Silicone as a protective film for chips exhibits high heat resistance. Silicone can be mixed with a phosphor to make a white LED. Silicone can be dispensed or easily molded. The main applications are general lighting products such as LEDs and backlight products in liquid crystal displays (LCDs).

One of the disadvantages of silicones is that they are highly permeable and gas permeable. Chemically contaminated substances such as volatile organic compounds (VOCs) that are outgassed from the circuit board when the temperature rises cause discoloration, especially yellowing over time. VOCs can accelerate LED degradation or impair LED performance. The effects of chemical incompatibility were seen on blue and white LEDs, but not on red or green LEDs. Silicone also turns yellow when exposed to light or heat. Silicone also allows moisture to permeate, which accelerates and reduces the deterioration of LED performance. The disadvantage of other silicones is their high CTE (320 ppm / ° C., Electrical Packaging and Interconnection Handbook). The index of refraction should also be higher.

The advantages of glass are better optical properties and durability. This is attractive in high performance applications. However, the clear disadvantage of glass is that it does not fit into standard LED manufacturing processes.

Epoxides are known for their excellent adhesion, chemical and thermal resistance, good to good mechanical properties, and very good electrical insulation properties. However, epoxides are inferior in aging properties. They are inferior in water resistance due to high water absorption and particularly inferior in light resistance due to low transmission of short wavelength light.

The choice of suitable encapsulant material is greatly influenced by its processability as well as its resistance to UV and high heat over time. The encapsulant and the corresponding polymer formulation, from which the encapsulant is prepared for the manufacture of LEDs, need to meet some requirements. In addition to optimal barrier properties against water vapor as well as mechanical and optical resistance, a high index of refraction is required. The refractive index of a typical gallium nitride LED chip is about 2.4. Light exiting the LED chip and entering the encapsulating material with a lower index of refraction is limited by the total internal reflection of the surface. Similarly, there is a refractive index mismatch with the phosphor embedded in the encapsulating material. The higher index of refraction of the encapsulant material reduces this effect and thus increases the brightness of the LED. So far, phenylsilicone with a refractive index up to 1.54 has been used as the high refraction encapsulant material. The drawback of such materials is the presence of aromatic groups that limit thermal and optical resistance. Further, it is difficult to mix nanocrystals having a high refractive index and silicone to prepare a stable dispersed state because the silicone and many other materials are incompatible and the nanocrystals are aggregated.

Thus, a novel encapsulation that allows the preparation of high performance LEDs that are stable, low temperature dependent, have a high index of refraction, and have increased light output, increased color point resistance and barrier properties against water vapor. There is a strong demand for materials. In addition, there is a strong demand for novel formulations that allow for the efficient preparation of the novel encapsulant materials described above.

To date, no LED encapsulant material has been reported that has a high index of refraction and high transmittance and is resistant to yellowing due to thermal aging above 150 ° in air (Kim et al., 2010). , Chemistry of Materials).

WO2012 / 0677666 discloses an LED comprising a polysilazane binding layer. The bond layer typically further comprises a (meth) acrylate monomer.

WO2014 / 062871A1 relates to a material composition for LEDs, which comprises a matrix and at least one filler, wherein the matrix is a core-shell particle assembly containing an inorganic core and a polymer shell.

WO2015 / 007778A1 discloses a novel encapsulating material for LEDs derived from a particular organopolysilazane. US2015 / 0188006A1 discloses a polysilazane / polysiloxane copolymer as a sealant. Polysilazane / polysiloxane block copolymers are also disclosed in WO2002 / 068535A1.

EP2733117A2 relates to an inorganic fine particle scattering film and a method for producing the same. An inorganic fine particle layer containing holes is formed on the LED contact surface or the transmissive substrate in order to achieve a high light extraction effect by a light scattering effect, and the flattening layer is inorganic in order to show high flatness and increase the strength. It is formed on the fine particle layer.

US2009 / 0227996A1 relates to a phosphor conversion LED. The light extraction effect and the uniformity of the color temperature distribution are improved by the introduction of both nanoparticles and light scattering particles close to the light source.

However, the LED encapsulating materials known from the prior art have room for improvement, especially with respect to better LED properties with improved efficiency and improved color point stability.

Technical Issues and Objectives of the Invention Various polymer formulations have been proposed for the preparation of encapsulating materials for LED applications. However, such as enabling the efficient manufacture of LEDs with converter layers with increased efficiency due to increased light output, especially after aging, with improved color point stability and enhanced barrier properties against water vapor. , There is a continuous need for improvements in these polymer formulations and the resulting encapsulation materials. In addition, there is a strong demand for new encapsulating materials with a high refractive index that is minimally temperature dependent.

Therefore, an object of the present invention is to overcome the disadvantages of the prior art and to prepare high refraction encapsulation materials for LEDs with improved light output and improved color point stability. To provide a suitable novel polymer formulation. A further object of the present invention is to provide a method for preparing a polymer formulation suitable for preparing a high refractive index encapsulating material for an LED. Furthermore, an object of the present invention is to provide an LED comprising the high refraction encapsulating material and having enhanced barrier properties against water vapor. Furthermore, an object of the present invention is to provide a method for producing an LED by using the polymer formulation in an efficient manner.

The polymeric formulations according to the invention are particularly suitable for the preparation of encapsulants for LEDs, especially LEDs, converter layers of phosphor-converted LEDs (pc-LEDs) having a high index of refraction. In addition, polymer formulations exhibit faster cure rates compared to conventional polymer formulations, allowing for more efficient processability. The encapsulating material of the present invention provides one that is less temperature dependent and has a high index of refraction, thereby providing increased light output and increased color point resistance, and enhanced barrier properties against water vapor. It enables the production of high-performance LEDs.

（式中、Ｒ^１、Ｒ^２、Ｒ^３、Ｒ^４、およびＲ^５は、出現毎に互いに独立に、水素、オルガニルおよびオルガノヘテリルからなる群から選択され、かつａは１〜６０の整数である） Outline of the Invention The present inventors surprisingly have the above-mentioned purpose.
It can be solved individually or in any combination by a polymer comprising a ^first repeating unit M 1 and a second repeating unit M ^{2 and a formulation comprising surface-modified zirconium dioxide nanocrystals.} I found it.
Here, the first repeating unit M ¹ is represented by the formula (I), and the second repeating unit M ² is represented by the formula (II).

(In the equation, R ¹ , R ² , R ³ , R ⁴ and R ⁵ are selected from the group consisting of hydrogen, organol and organoheteryl independently of each other on each occurrence, and a is an integer of 1-60. )

In addition, encapsulant materials for LEDs are provided, where the encapsulant material is:
(A) To provide a formulation according to the invention; and (b) obtained by curing the formulation at a temperature of 70-300 ° C. for 1-24 hours.

Further provided is an LED comprising the encapsulating material of the present invention.

Further provided is a method of preparing a formulation according to the invention, wherein the polymer containing the first repeating unit M ¹ and the second repeating unit M ^{2 is mixed with a dispersion of surface-modified nanocrystals.}

Finally, the present invention provides a method of manufacturing an LED comprising the following steps:
(A) Applying the formulation according to the invention to the LED precursor; and (b) curing the formulation at a temperature of 70-300 ° C. for 1-24 hours.

Preferred additional forms are disclosed in the following dependent terms.

In FIG. 1, a silicone capping agent in which the head group is alkoxysilane and the tail group contains a silicone polymer (silicone chain) and a linker is used to connect the tail group to the head group. Is shown.

FIG. 2 shows the UV-Vis spectrum of surface-modified silicone-capped ZrO _{2 dispersed in xylene.} FIG. 3 shows the TGA spectrum of surface-modified silicone capped ZrO _2.

FIG. 4 shows the particle size distribution of surface-modified silicone-capped ZrO _{2 measured by a dynamic light scattering device.}

FIG. 5 shows the measured index of refraction, each compared to the calculated curve.

FIG. 6 shows the refractive index as a function of temperature.

Detailed description of the invention

As used herein, the term "encapsulation material or encapsulant" means a material that covers or encapsulates a converter. Preferably, the encapsulating material is a portion of the converter layer that includes one or more converters. The converter layer may be arranged directly on the semiconductor light source (LED chip) or may be arranged away from it, depending on the intended use. The converter layer may have a different film thickness or may exist as a film having a uniform film thickness. The encapsulant material forms a barrier to the external environment of the LED device, thereby protecting the converter and / or the LED chip. The encapsulant material preferably comes into direct contact with the converter and / or LED chip. Generally, the encapsulating material is an LED package comprising an LED chip and / or a lead frame and / or a gold wire, and / or a solder (flip chip), a filling material, a converter, and first and second optics. Is the part of. The encapsulating material may cover the LED chip and / or the lead frame and / or the gold wire and may include a converter. The encapsulating material has the function of a surface protective material against the influence of the external environment and guarantees long-term reliability which means stability over time. Preferably, the converter layer containing the encapsulant has a film thickness of 1 μm to 1 cm, more preferably 10 μm to 1 mm.

External environmental impacts (encapsulating materials need to protect the LED from it) are physical, such as chemical, temperature, or mechanical shock or stress, such as moisture, acids, bases, oxygen, etc. It may be a thing. The sealant exhibits a temperature tolerance of −55 ° C. to + 260 ° C. The encapsulating material of the present invention can also function as a binder for converters such as fluorescent powders or quantum materials (eg, quantum dots). The encapsulant can also be formed to provide a first optical function (lens).

It should be noted that the terms "layers" are used interchangeably throughout the application. Those skilled in the art will appreciate that a single layer of material may actually contain several individual layers of material. Similarly, some "layers" of material may be considered to function as a single layer. That is, the term "layer" does not refer to a homogeneous layer of material. A single layer may contain different material concentrations and compositions localized in the sublayer. These sublayers may be formed by a single forming step or a plurality of steps. Unless otherwise stated, the claims are not intended to limit the scope of the invention by disclosure of elements comprising a "layer" of material.

The term "LED" as used herein refers to one or more semiconductor light sources (LED chips), lead frames, wiring, solder (flip chips), converters, filling materials, sealing materials, first optics and / or first. It means an LED device including 2 optical systems. The LED may be prepared from an LED precursor that includes a semiconductor light source (LED chip) and / or a lead frame and / or a gold wire and / or a solder (flip chip). In the LED precursor, neither the LED chip nor the converter is encapsulated by the encapsulating material. Usually, the encapsulant material and the converter form a part of the converter layer. Such converter layers may be placed directly on top of the LED chip or instead placed away from it, depending on the application.

As used herein, the term "converter" means a material that converts light of a first wavelength to light of a second wavelength (where the second wavelength is different from the first wavelength). .. The converter is a phosphor or quantum material.

A "phosphor" is an inorganic fluorescent material containing one or more emission centers. The emission center is, for example, an atom or ion of a rare earth metal element (eg, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu), and / or a transition. Atomic or ion of metal elements (eg, Cr, Mn, Fe, Co, Ni, Cu, Ag, Au and Zn) and / or main metal elements (eg, Na, Tl, Sn, Pb, Sb and Bi). Formed by active elements such as atoms or ions. Examples of suitable phosphors are garnet, silicate, orthosilicate, thiogallate, sulfide, nitride, silicon-based oxynitride, nitrid silicate, nitridoaluminum silicate, oxonitrid silicate, oxonitri. Includes doaluminum silicate and rare earth-doped sialon-based phosphors. The phosphor in the sense of the present invention absorbs electromagnetic radiation in a specific wavelength range, preferably blue and / or ultraviolet (UV) electromagnetic radiation, and the absorbed electromagnetic radiation is electromagnetic radiation having a different wavelength range, preferably. Converts to visible (VIS) light, for example purple, blue, green, yellow, orange, or red light.

A "quantum material" is a semiconductor nanocrystal that forms a class of nanomaterials with widely adjustable physical properties by controlling particle size, composition, and shape. In particular, the most distinct size-dependent property of this class of materials is adjustable fluorescence. The tunability is based on the quantum confinement effect, and the reduced particle size results in "particle in box" behavior, resulting in a blue change in bandgap energy and thus luminescence. Thus, for example, the emission of CdSe nanocrystals can be adjusted from 660 nm for particles with a diameter of ~ 6.5 nm to 500 nm for particles with a diameter of ~ 2 nm. Similar behavior is seen in the wide spectral range of other semiconductors from SUVs (eg when using ZnSe, CdS) to near-IR (eg when using InAs) via visible (eg when using CdSe, InP). Can be achieved when prepared as nanocrystals that allow. Nanocrystal shape changes have been demonstrated in some semiconductor systems where rod shape is particularly important. Nanorods exhibit different properties than spherical particles. For example, they show polarized light along the longitudinal axis of the rod, while spherical particles show unpolarized light. Furthermore, we have presented and shown the potential use of nanorods as laser materials for their advantageous properties in optical gain (Banin et al. Adv. Mater (2002) 14,317). It has also been shown that luminescence can be reversibly switched on and off for a single nanorod and that it behaves uniquely in an external electric field (Banin et. Al. Nano Letters (2005) 5, 1581). ).

The "Nanocrystal" used here has a diameter of <100 nm, preferably ≦ 95 nm, more preferably ≦ 90 nm, even more preferably ≦ 85 nm, even more preferably ≦ 80 nm, even more preferably ≦. 75 nm, even more preferably ≦ 70 nm, even more preferably ≦ 65 nm, even more preferably ≦ 60 nm, even more preferably ≦ 55 nm, even more preferably ≦ 50 nm, even more preferably ≦ 45 nm, even more preferably ≦ 40 nm. Crystalline particles, even more preferably ≦ 35 nm, even more preferably ≦ 30 nm, even more preferably ≦ 25 nm, even more preferably ≦ 20 nm, even more preferably ≦ 15 nm, most preferably ≦ 10 nm. Is.

The term "polymer" includes, but is not limited to, homopolymers, copolymers (eg, block, random, and mutual copolymers), terpolymers, quarterpolymers, etc., and blends and variants thereof. Furthermore, unless otherwise specified, the term "polymer" includes all possible stereoisomers of the material. These solids include, but are not limited to, isotactics, syndiotactics, and tactical controls. A polymer is a molecule with a relatively high molecular weight, and this structure is essentially a multiple repeating unit (ie, a monomer) derived from a molecule with a relatively low molecular weight (ie, a monomer), either practically or conceptually. Repeat unit) is included.

As used herein, the term "monomer" refers to a molecule that can be polymerized, thereby providing a building block (repeating unit) of the important structure of the polymer.

As used herein, the term "homopolymer" means a polymer derived from a type of (real, potential, or hypothetical) monomer.

As used herein, the term "copolymer" generally means any polymer derived from more than one monomer, which comprises more than one corresponding repeating unit. In one form, the copolymer is a reaction product of two or more monomers and thus comprises two or more corresponding repeating units. Preferably, the copolymer comprises 2, 3, 4, 5, or 6 repeating units. The copolymer obtained by the copolymerization of the three monomer species can also be said to be a terpolymer. The copolymer obtained by the copolymerization of four monomer species can also be said to be a quarter polymer. Copolymers may exist as block, random, and / or reciprocal copolymers.

The term "block copolymer" as used herein is derived from the structurally different adjacent blocks, i.e. the same type of monomer in which the adjacent blocks are different types of monomers or have a chain distribution of different compositions or repeating units. Means a copolymer consisting of repeating units.

Furthermore, the term "random copolymer" as used herein is a polymer formed from macromolecules, the probability of finding a given repeating unit in a given position in a chain is the property of adjacent repeating units. Regarding what is independent of. Usually, in random copolymers, the chain distribution of repeating units follows Bernoulli statistics.

As used herein, the term "alternate polymer" means a copolymer in which macromolecules containing two repeating units are alternately composed.

For the purposes of this application, the term "organyl" is used to indicate any organic substituent that has one free valence on a carbon atom, regardless of the type of functionality. ..

For the purposes of this application, the term "organoheteryl" is used to indicate any monovalent group that contains carbon and is therefore organic but has free valences in atoms other than carbon, which are heteroatoms. used.

As used herein, the term "heteroatom" is understood to mean an atom in an organic compound that is not an H- or C-atom, and is preferably N, O, S, P, Si. , Se, As, Te or Ge.

The organol or organoheteryl group, which comprises a chain of 3 or more C atoms, may be linear, branched and / or cyclic and comprises a spiro and / or fused ring.

Preferred organol and organoheteryl groups are alkyl, alkoxy, alkylcarbonyl, alkoxycarbonyl, alkylcarbonyloxy, and alkoxycarbonyloxy, each of which is optionally substituted and 1-40, preferably 1-25, very. (Preferably having 1 to 18 C atoms), and aryl or aryloxy (which is optionally substituted and has 6 to 40, preferably 7 to 40 C atoms), and alkylaryloxy, Alylcarbonyl, aryloxycarbonyl, arylcarbonyloxy and aryloxycarbonyloxy (each of which is optionally substituted and has 6-40, preferably 7-40 C atoms) of these. All of the groups optionally contain one or more heteroatoms, preferably selected from N, O, S, P, Si, Se, As, Te and Ge.

The organol or organoheteryl group may be a saturated or unsaturated, acyclic group, or a saturated or unsaturated, cyclic group. The unsaturated, acyclic or cyclic group is particularly preferably aryl, alkenyl and alkynyl groups (particularly ethynyl). Here, C ₁ -C ₄₀ organyl or organoheteryl group is acyclic, the group may be linear or branched. Examples of the C _1- C ₄₀ organol or organoheteryl group include: C _1- C ₄₀ alkyl group, C _1- C ₄₀ fluoroalkyl group, C _1- C ₄₀ alkoxy or oxaalkyl group, C _2- C ₄₀ alkenyl group, C ₂ -C ₄₀ alkynyl _group, C 3 _{-C 40} allyl _group, C 4 _{-C 40} alkadienyl _group, C 4 _{-C 40} polyenyl _group, C 2 _{-C 40} ketone _group, C 2 _{-C 40} ester group, Examples thereof include C _6- C ₁₈ aryl group, C _6- C ₄₀ alkyl aryl group, C _6- C ₄₀ aryl alkyl group, C _4- C ₄₀ cycloalkyl group, C _4- C ₄₀ cycloalkenyl group and the like. Of the above groups, the preferred groups are C _1- C ₂₀ alkyl group, C _1- C ₂₀ fluoroalkyl group, C _2- C ₂₀ alkenyl group, C _2- C ₂₀ alkynyl group and C _3- C _{20, respectively. allyl,} C 4 _{-C 20} alkyldienyl _group, C 2 _{-C 20} ketone _group, C 2 _{-C 20} ester _group, C 6 _{-C 12} aryl groups, and _C 4 _{-C 20} polyenyl group. It also includes a combination of a group having a carbon atom and a group having a heteroatom, such as an alkynyl group, preferably an ethynyl group, which is substituted with a silyl group, preferably a trialkylsilyl group.

As used herein, the terms "aryl" and "heteroaryl" may preferably comprise a fused ring and simply have 4-30 ring C atoms substituted with one or more groups L as desired. It means a cyclic, bicyclic or tricyclic, aromatic or heteroaromatic group, where L is halogen, -CN, -NC, -NCO, -NCS, -OCN, -SCN, -C (= O) NR ⁰ R ⁰⁰ , -C (= O) X ⁰ , -C (= O) R ⁰ , -NH ₂ , -NR ⁰ R ⁰⁰ , -SH, -SR ⁰ , -SO ₃ H , -SO ₂ R ⁰ , -OH, -NO ₂ , -CF ₃ , -SF ₅ , optionally substituted silyl, or optionally substituted and optionally containing one or more heteroatoms, 1- Alkoxy, alkoxy, thiaalkyl, alkylcarbonyl, alkoxycarbonyl, or alkoxycarbonyl having 1 to 20 C atoms selected from organol or organoheteryl having 40 C atoms and preferably fluorinated if desired. It is oxy, and R ⁰ , R ⁰⁰ , X ⁰ have the above and the following meanings.

The highly preferred substituent L has a halogen, most preferably F, or 1-12 C atoms, alkyl, alkoxy, oxaalkyl, thioalkyl, fluoroalkyl and fluoroalkoxy, or 2-12 C atoms. Selected from alkynyl and alkenyl.

Particularly preferred aryl and heteroaryl groups are phenyl, naphthalene, thiophene, selenophene, thienothiophene, dithienothiophene, fluorene and oxazole in which one or more CH groups are replaced by N, all of which are unsubstituted. Or can be mono- or poly-substituted by the L defined above. Very preferred rings are pyrrole, preferably N-pyrrole, furan, pyridine, preferably 2- or 3-pyridine, pyrimidine, pyridazine, pyrazine, triazole, tetrazole, pyrazole, imidazole, isothiazole, thiazole, thiadiazol, iso. Oxazole, oxazole, oxadiazol, thiophene, preferably 2-thiophene, selenophene, preferably 2-selenophene, thieno [3,2-b] thiophene, thieno [2,3-b] thiophene, furan [3,2- b] Furan, Flo [2,3-b] Furan, Sereno [3,2-b] Serenophen, Sereno [2,3-b] Serenophen, Thieno [3,2-b] Serenophen, Thieno [3,2-b] b] furan, indole, isoindole, benzo [b] furan, benzo [b] thiophene, benzo [1,2-b; 4,5-b'] thiophene, benzo [2,1-b; 3,4- b'] Dithiophene, quinol, 2-methylquinol, isoquinol, quinoxalin, quinazoline, benzotriazole, benzoimidazole, benzothiazole, benzoisothiazole, benzoisoxazole, benzoxaziazole, benzoxazole, benzothiazol, which are selected from these. All of can be unsubstituted or mono- or poly-substituted by the L defined above. Further examples of aryl and heteroaryl groups are those selected from the groups listed below.

Alkoxy or alkoxy radicals (ie, where the _two terminal CHs are replaced with -O-) can be linear or branched. It is preferably linear (or linear). Suitable examples of such alkyl and alkoxy radicals are methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecylic, tetradecyl, pentadecyl, methoxy, ethoxy, propoxy, butoxy. , Pentoxy, Hexoxy, Heptoxy, Octoxy, Nonoxy, Decoxy, Undecoxy, Dodecoxy, Tridecoxy or Tetradecoxy. Preferred alkyl and alkoxy radicals have 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 carbon atoms. Suitable examples of such preferred alkyl and alkoxy radicals are methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, decyl, methoxy, ethoxy, propoxy, butoxy, pentoxy, hexoxy, heptoxy, octoxy, It can be selected from the group consisting of nonoxy and decoxy.

An alkenyl group in which one or more _two CH groups are replaced with −CH = CH− can be linear or branched. This group is preferably linear and has 2 to 10 C atoms, and therefore preferably vinyl, propa-1-enyl or propa-2-enyl, porcine-1-enyl, porcine. -2-Enyl or porcine-3-enyl, penta-1-enyl, penta-2-enyl, penta-3-enyl or penta-4-enyl, hexa-1-enyl, hexa-2-enyl, hexa-3 -Enyl, hexa-4-enyl or hexa-5-enyl, hepta-1-enyl, hepta-2-enyl, hepta-3-enyl, hepta-4-enyl, hepta-5-enyl or hepta-6-enyl , Octa-1-enyl, octa-2-enyl, octa-3-enyl, octa-4-enyl, octa-5-enyl, octa-6-enyl or octa-7-enyl, nona-1-enyl, nona -2-Enyl, Nona-3-enyl, Nona-4-enyl, Nona-5-enyl, Nona-6-enyl, Nona-7-enyl or Nona-8-enyl, Deca-1-enyl, Deca-2 -Enyl, deca-3-enyl, deca-4-enyl, deca-5-enyl, deca-6-enyl, deca-7-enyl, deca-8-enyl or deca-9-enyl.

Particularly preferred alkenyl _groups, C ₂ -C 7 -1E- _alkenyl, C ₄ -C 7 -3E- _alkenyl, C ₅ -C 7 -4- _alkenyl, C ₆ -C 7 -5- alkenyl and _C 7 -6 - alkenyl, in particular _C 2 _-C 7 -1E- _alkenyl, C ₄ -C 7 -3E-alkenyl and _C 5 _-C 7 -4- alkenyl. Examples of particularly preferred alkenyl groups are vinyl, 1E-propenyl, 1E-butenyl, 1E-pentenyl, 1E-hexenyl, 1E-heptenyl, 3-butenyl, 3E-pentenyl, 3E-hexenyl, 3E-heptenyl, 4-pentenyl, 4Z-hexenyl, 4E-hexenyl, 4Z-heptenyl, 5-hexenyl, 6-heptenyl and the like. An alkenyl group having up to 5 C atoms is generally preferred.

The oxaalkyl (ie, where one CH ₂ group is replaced with -O-) group is preferably, for example, linear, 2-oxapropyl (= methoxymethyl), 2- (ethoxymethyl). ) Or 3-oxabutyl (= 2-methoxyethyl), 2-, 3- or 4-oxapentyl, 2-, 3-, 4- or 5-oxahexyl, 2-, 3-, 4-, 5-or 6-Oxaheptyl, 2-, 3-, 4-, 5-, 6- or 7-oxaoctyl, 2-, 3-, 4-, 5-, 6-, 7- or 8-oxanonyl, or 2- , 3-, 4-, 5-, 6-, 7-, 8- or 9-oxadecyl. Oxalalkyl (ie, where one CH ₂ group is replaced with -O-) is preferably, for example, linear, 2-oxapropyl (= methoxymethyl), 2- (= ethoxymethyl). Alternatively, 3-oxabutyl (= 2-methoxyethyl), 2-, 3- or 4-oxapentyl, 2-, 3-, 4- or 5-oxahexyl, 2-, 3-, 4-, 5- or 6 -Oxaheptyl, 2-, 3-, 4-, 5-, 6- or 7-oxaoctyl, 2-, 3-, 4-, 5-, 6-, 7- or 8-oxanonyl, or 2-, 3-, 4-, 5-, 6-, 7-, 8- or 9-oxadecyl.

By one CH ₂ group -O-, and one is -C (O) - in the alkyl group has been replaced with, these radicals are preferably neighboured. Therefore, these groups together form the carbonyloxy group-C (O) -O- or the oxycarbonyl group-OC (O)-. Preferably, the group is linear and has 2 to 6 C atoms. It is therefore preferably acetyloxy, propionyloxy, butyryloxy, pentanoyloxy, hexanoyloxy, acetyloxymethyl, propionyloxymethyl, butyryloxymethyl, pentanoyloxymethyl, 2-acetyloxyethyl, 2-propionyl. Oxyethyl, 2-butyryloxyethyl, 3-acetyloxypropyl, 3-propionyloxypropyl, 4-acetyloxybutyl, methoxycarbonyl, ethoxycarbonyl, propoxycarbonyl, butoxycarbonyl, pentoxycarbonyl, methoxycarbonylmethyl, ethoxycarbonyl Methyl, propoxycarbonylmethyl, butoxycarbonylmethyl, 2- (methoxycarbonyl) ethyl, 2- (ethoxycarbonyl) ethyl, 2- (propoxycarbonyl) ethyl, 3- (methoxycarbonyl) propyl, 3- (ethoxycarbonyl) propyl and It is selected from the group consisting of 4- (methoxycarbonyl) butyl.

Alkyl groups in which two or more CH ₂ groups are replaced with -O- and / or -C (O) O- can be linear or branched. Preferably, the group is linear and has 3-12 C atoms. This group is therefore preferably biscarboxymethyl, 2,2-biscarboxyethyl, 3,3-biscarboxypropyl, 4,4-biscarboxybutyl, 5,5-biscarboxypentyl, 6,6-bis. Carboxyhexyl, 7,7-biscarboxyheptyl, 8,8-biscarboxyoctyl, 9,9-biscarboxynonyl, 10,10-biscarboxydecyl, bis (methoxycarbonyl) -methyl, 2,2-bis (methoxy) Carbonyl) ethyl, 3,3-bis (methoxycarbonyl) propyl, 4,4-bis (methoxycarbonyl) butyl, 5,5-bis (methoxycarbonyl) pentyl, 6,6-bis (methoxycarbonyl) -hexyl, 7 , 7-Bis- (methoxycarbonyl) heptyl, 8,8-bis (methoxycarbonyl) octyl, bis (ethoxycarbonyl) methyl, 2,2-bis (ethoxycarbonyl) ethyl, 3,3-bis (ethoxycarbonyl) propyl , 4,4-Bis (ethoxycarbonyl) butyl and 5,5-bis (ethoxycarbonyl) hexyl.

The thioalkyl group (ie, where one CH ₂ group is replaced by -S-) is preferably linear, thiomethyl (-SCH ₃ ), 1- _{thioethyl (-SCH 2} CH ₃ ). , 1-thiopropyl (= -SCH ₂ CH ₂ CH ₃ ), 1- (thiobutyl), 1- (thiopentyl), 1- (thiohexyl), 1- (thioheptyl), 1- (thiooctyl), 1- (thiononyl) 1- (Chiodeshiru), a 1- (Chioundeshiru) or 1- (Chiododeshiru), in these, preferably, CH ₂ group adjacent to the sp ² hybridised vinyl carbon atom is replaced.

Fluoroalkyl groups are preferably perfluoroalkyl, C _i F _{2i + 1} (where i is an integer of 1 to 15), in particular CF ₃ , C ₂ F ₅ , C ₃ F ₇ , C ₄ F ₉ , C. ₅ F ₁₁ , C ₆ F ₁₃ , C ₇ F ₁₅ , or C ₈ F ₁₇ , very preferably C ₆ F ₁₃ , or partially fluorinated alkyl, especially 1,1-difluoroalkyl. And all of these are linear or branched.

Alkoxy, alkoxy, alkenyl, oxaalkyl, thioalkyl, carbonyl, and carbonyl groups can be achiral or chiral groups. Particularly preferred chiral groups are, for example, 2-butyl (= 1-methylpropyl), 2-methylbutyl, 2-methylpentyl, 3-methylpentyl, 2-ethylhexyl, 2-propylpentyl, especially 2-methylbutyl, 2-. Methylbutoxy, 2-methylpentoxy, 3-methylpentoxy, 2-ethylhexoxy, 1-methylhexoxy, 2-octyloxy, 2-oxa-3-methylbutyl, 3-oxa-4-methylpentyl, 4-methylhexyl, 2-Hexyl, 2-octyl, 2-nonyl, 2-decyl, 2-dodecyl, 6-meth-oxyoctoxy, 6-methyloctoxy, 6-methyloctanoyloxy, 5-methylheptyloxycarbonyl, 2- Methylbutyryloxy, 3-methylvaleroyloxy, 4-methylhexanoyloxy, 2-chloropropionyloxy, 2-chloro-3-methylbutyryloxy, 2-chloro-4-methylvaleryloxy, 2-chloro -3-Methylreryloxy, 2-Methyl-3-oxapentyl, 2-Methyl-3-oxahexyl, 1-methoxypropyl-2-oxy, 1-ethoxypropyl-2-oxy, 1-propoxypropyl-2 -Oxy, 1-butoxypropyl-2-oxy, 2-fluorooctyloxy, 2-fluorodecyloxy, 1,1,1-trifluoro-2-octyloxy, 1,1,1-trifluoro-2-octyl , 2-Fluoromethyloctyloxy. Highly preferred are 2-hexyl, 2-octyl, 2-octyloxy, 1,1,1-trifluoro-2-hexyl, 1,1,1-trifluoro-2-octyl and 1,1,1. -Trifluoro-2-octyloxy.

Preferred achiral branched groups are isopropyl, isobutyl (= methylpropyl), isopentyl (= 3-methylbutyl), tert-butyl, isopropoxy, 2-methylpropoxy, and 3-methylbutoxy.

式中、「ＡＬＫ」は、所望によりフッ素化されていて、好ましくは直鎖の、１〜２０、好ましくは１〜１２（第３級基の場合は、非常に好ましくは１〜９）のＣ原子を有する、アルキルもしくはアルコキシを表わし、そして、破線は、これらの基が接続する環への連結を表わす。これらの基の中で特に好ましいのは、全ての下位基ＡＬＫが同一のものである。 In a preferred embodiment, the organol and organoheteryl groups are alkyl or alkoxy (among which one or more H atoms) having primary, secondary or tertiary C atoms of 1 to 30 independent of each other. Is optionally replaced with F), or optionally alkylated or alkoxylated and selected from aryl, aryloxy, heteroaryl or heteroaryl having 4-30 ring atoms. A highly preferred group of this type is selected from the group consisting of the following formulas:

In the formula, "ALK" is optionally fluorinated and is preferably a linear, 1-20, preferably 1-12 (very preferably 1-9 in the case of a tertiary group) C. It represents an alkyl or alkoxy having an atom, and the dashed line represents the connection to the ring to which these groups connect. Of these groups, particularly preferred are all subgroups ALKs that are identical.

-CY ¹ = CY ^2- is preferably -CH = CH-, -CF = CF- or -CH = C (CN)-.

As used herein, "halogen" comprises F, Cl, Br or I, preferably F, Cl or Br.

For the purposes of the present invention, the term "substituted" is used to indicate that one or more hydrogens present have been replaced by the ^{group RS defined herein.}

R ^S is independently at each occurrence, any group R ^T as defined ^herein; a organyl or organoheteryl having 1 to 40 carbon atoms, the organyl or organoheteryl further with one or more groups R ^T substitution And one or more heteroatoms (N,) having 1 to 40 carbon atoms and selected from the group consisting of N, O, S, P, Si, Se, As, Te or Ge. O and S comprises a preferably a heteroatom) organyl or organoheteryl (organyl or organoheteryl is selected from the group consisting of addition may be substituted) with one or more groups R ^T.

Preferred examples of suitable organyl or organoheteryl as R ^S is independently at each occurrence, phenyl, 1 or more substituted phenyl groups R ^T, alkyl (wherein substituted alkyl and one or more groups R ^T, The alkyl has at least 1, preferably at least 5, more preferably at least 10, and most preferably at least 15 carbon atoms and / or up to 40, more preferably up to 30, even more preferably up to 25. And most preferably it has up to 20 carbon atoms). For example, ^{alkyl suitable as RS} are also alkyl fluorinated (ie, alkyl in which one or more hydrogens are replaced by fluorine), and alkyl perfluorinated (ie, alkyl in which all of hydrogen is replaced by fluorine). ) Is included.

^RT is F, Br, Cl, -CN, -NC, -NCO, -NCS, -OCN, -SCN, -C (O) NR ⁰ R ⁰⁰ , -C (O) X independently for each appearance. ⁰ , -C (O) R ⁰ , -NH ₂ , -NR ⁰ R ⁰⁰ , -SH, -SR ⁰ , -SO ₃ H, -SO ₂ R ⁰ , -OH, -OR ⁰ , -NO ₂ ,- It is selected from the group consisting of SF ₅ and −SiR ⁰ R ⁰⁰ R ^000. Preferred ^R T is, F, Br, Cl, -CN , -NC, -NCO, -NCS, -OCN, -SCN, -C (O) NR 0 R 00, -C (O) X 0, -C ( O) Selected from the group consisting of ^{R 0} , -NH ₂ , -NR ⁰ R ⁰⁰ , -SH, -SR ⁰ , -OH, -OR ⁰ and -SiR ⁰ R ⁰⁰ R ^000.

R ⁰ , R ⁰⁰ and R ⁰⁰⁰ are independently selected from each other on each occurrence from the group consisting of organol or organoheteryl having H, F, 1-40 carbon atoms. The organol or organoheteryl preferably has at least 5, more preferably at least 10, and most preferably at least 15 carbon atoms. The organol or organoheteryl preferably has a maximum of 30, even more preferably a maximum of 25, and most preferably a maximum of 20 carbon atoms. Preferably, R ⁰ , R ⁰⁰ and R ⁰⁰⁰ are independently selected from the group consisting of H, F, alkyl, alkyl fluorinated, alkenyl, alkynyl, phenyl and phenyl fluorinated on each appearance. More preferably, R ⁰ , R ⁰⁰ and R ⁰⁰⁰ were H, F, alkyl, fluorinated, preferably perfluorinated alkyl, phenyl, and fluorinated independently of each other on each appearance. It is preferably selected from the group consisting of perfluorinated phenyl.

It is noted that suitable alkyls, for example as R ⁰ , R ⁰⁰ and R ⁰⁰⁰ , also include perfluorinated alkyls (ie, where all hydrogen is replaced by fluorine). Examples of alkyls are methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl (or "t-butyl"), pentyl, hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl. , Tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, nonadecyl and eikosyl (-C ₂₀ H ₄₁ ).

X ⁰ is a halogen. Preferably, X ⁰ is selected from the group consisting of F, Cl and Br.

The present invention relates to ^{a formulation comprising a polymer comprising a first} repeating unit M 1 and a second repeating unit M ² and surface-modified zirconium dioxide nanocrystals.

In a preferred embodiment, the polymer comprises at least one additional repeating unit M ¹ (which is different from the ^first repeating unit M 1). Such additional repeating units M ¹ are different from each other if the polymer comprises more than 1 additional repeating unit M ^1. More preferably, the polymer comprises 2, 3, or 4 additional repeating units M ¹ (which, ^{unlike the first} repeating unit M 1, are different from each other).

In a preferred embodiment, the polymer comprises at least one additional repeating unit M ² (which is different from the ^second repeating unit M 2). Such additional repeating units M ² are different from each other if the polymer comprises more than 1 additional repeating unit M ^2. More preferably, the polymer comprises 2, 3, or 4 additional repeating units M ¹ (which, ^{unlike the second} repeating unit M 2, are different from each other).

In a more preferred form, the polymer comprises at least one additional repeating unit M ¹ and at least one additional repeating unit M ² as described above.

Preferably, the polymer is a copolymer, such as a random copolymer or a block copolymer or a copolymer comprising at least one random sequence section and at least one block sequence section. More preferably, the polymer is a random copolymer or a block copolymer.

式中、Ｒ^１、Ｒ^２およびＲ^５は、本明細書で定義されたとおりである。 The first repeating unit M ¹ is represented by the formula (I).

In the formula, R ¹ , R ² and R ⁵ are as defined herein.

式中、Ｒ^３、Ｒ^４およびＲ^５および添え字「ａ」は本明細書で定義されたとおりである。 The second repeating unit M ² is represented by the formula (II).

In the formula, R ³ , R ⁴ and R ⁵ and the subscript "a" are as defined herein.

The further repeating unit M ¹ is represented by the formula (I), and the further repeating unit M ¹ is different from the ^first repeating unit M 1.

a is an integer of 1 to 60, preferably an integer of 1 to 50. More preferably, a is 40 to 50 integer (long chain monomer ^M 2), even more preferably the group any consisting 40,41,42,43,44,45,46,47,48,49 and 50 Or a may be an integer of 1 to 4 (short chain monomer M ² ), and even more preferably any one of the group consisting of 1, 2, 3 and 4.

R ¹ , R ² , R ³ , R ⁴ and R ⁵ are independently selected from each other on each occurrence from the group consisting of hydrogen, organol and organoheteryl.

Preferred organol groups are alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, alkenyl, substituted alkenyl, alkazineyl, substituted alkazienyl, alkynyl, substituted alkynyl, aryl and independently on each appearance. It can be selected from the group consisting of substituted aryls.

The more preferred organol group may be independently selected from the group consisting of alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, alkenyl, substituted alkenyl, alkadienyl and substituted alkadienyl on each appearance. ..

Even more preferred organol groups may be independently selected from the group consisting of alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkadienyl and substituted alkadienyl on each appearance.

Even more preferred organol groups may be independently selected from the group consisting of alkyl and substituted alkyl on each appearance.

The most preferred organol group may be independently selected from the group consisting of alkyl on each appearance.

Preferred alkyls are at least 1 carbon atom and up to 40 carbon atoms, preferably up to 30 or 20 carbon atoms, more preferably up to 15 carbon atoms, even more preferably up to 10 carbon atoms, and most preferably. It may be selected from alkyls having up to 5 carbon atoms.

Alkyl having at least 1 carbon atom and up to 5 carbon atoms can be, for example, independently methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl (2, It may be selected from the group consisting of 2-methylbutyl) and neo-pentyl (2,2-dimethylpropyl); preferably it may be selected from the group consisting of methyl, ethyl, n-propyl and isopropyl; more preferably. Is methyl or ethyl; and most preferably methyl.

Preferred cycloalkyls may be selected from cycloalkyls having at least 3, preferably at least 4, and most preferably at least 5 carbon atoms. With respect to R ¹ and R ² , the preferred cycloalkyl is selected from cycloalkyl having up to 30, preferably up to 25, more preferably up to 20, even more preferably up to 15, and most preferably up to 10 carbon atoms. Can be done.

Preferred examples of cycloalkyl may be selected from the group consisting of cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl.

Preferred alkenyl may be selected from alkenyl having at least 2 carbon atoms and up to 20, more preferably 15, even more preferably up to 10, and most preferably up to 6 carbon atoms. The alkenyl may contain a C = C double bond at any position in the molecule; for example, the C = C double bond may be terminal or non-terminal.

The alkenyl having at least 2 and up to 10 carbon atoms may be vinyl or allyl, preferably vinyl.

Preferred alkazienyls may be selected from alkazienyls having at least 4, up to 20, more preferably up to 15, even more preferably up to 10, and most preferably up to 6 carbon atoms. The alkenyl may contain two C = C double bonds at any position in the molecule, provided that the two C = C double bonds are not adjacent to each other. For example, the C = C double bond may be terminal or non-terminal.

The alkazienyl having at least 4 and up to 6 carbon atoms may be, for example, butadiene or hexadiene.

Preferred aryls can be selected from aryls having at least 6 carbon atoms and up to 30, preferably up to 24 carbon atoms.

Preferred examples of aryls are phenyl, naphthyl, phenanthrenyl, anthracenyl, tetrasenyl, benz [a] anthrasenyl, pentasenyl, chrysenyl, benzo [a] pyrenyl, azulenyl, perylenyl, indenyl, fluorenyl, and one or more of them (eg, eg). It may be selected from the group consisting of any of 2, 3 or 4) where the CH group is replaced with N. Of these phenyls, naphthyls, and any of these in which one or more (eg, 2, 3 or 4) CH groups are replaced with N. Phenyl is most preferred.

In a preferred embodiment, R ¹ and R ² are hydrogen, or alkyl, or phenyl having 1 to 20 carbon atoms, independent of each other on each appearance.

In a more preferred form, R ¹ and R ² are hydrogen or methyl, independent of each other at each appearance.

In a preferred embodiment, R ³ and R ⁴ are hydrogen, or alkyl, or phenyl with 1-40 carbon atoms, independent of each other.

In a more preferred form, R ³ and R ⁴ are methyl or phenyl, independent of each other.

In a preferred embodiment, R ⁵ is independently at each occurrence, alkyl having carbon atoms of hydrogen or 1-20, or phenyl.

In a further preferred embodiment, R ⁵ is independently in each occurrence hydrogen or methyl.

Those skilled in the art will appreciate the above preferred forms and more with respect to ^{substituents R 1} , R ² , R ³ , R ⁴ and R ^{5 in polymers comprising a first} repeating unit U 1 and a second repeating unit U ^2. It is understood that the preferred forms can be freely linked in any desired way.

Preferably, the polymer used in the present invention is at least 1,000 g / mol, and more preferably (as measured by GPC) of at least 2,000 g / mol, even more preferably at least 3,000 g / mol of molecular weight _M w of Has. Preferably, the molecular weight M _w of the polymer is less than 100,000 g / mol. More preferably, the molecular weight M _w of the polymer is in the range of 3,000 to 50,000 g / mol.

If desired, the molecular weight of the polymer may be varied, preferably increased by fluoride-catalyzed cross-linking or by base-catalyzed cross-linking. These methods are well known to those of skill in the art.

The polymers of the present invention are characterized by excellent temperature resistance and / or long life compared to currently used standard materials (eg, phenylsilicone or organopolysilazane).

The surface-modified zirconium dioxide nanocrystals used in the formulations according to the invention may be surface-modified with a silicone capping agent.

An exemplary non-limiting method of capping ZrO ₂ nanocrystals with one or more capping agents is disclosed herein: As-synthesized ZrO ₂ nanocrystals are rinsed with a non-polar or protic solvent. The as-synthesized ZrO ₂ nanocrystals can be rinsed 0, 1, 2, or 3 times. The rinsing solvent may be a non-polar solvent such as toluene or heptane, or a polar solvent such as PGMEA or THF. ZrO ₂ nanocrystals as-synthesized was rinse, 1-5% ZrO ₂ nanocrystals, 5% to 10%, 10% to 15%, 15-20%, 20-25% 25-30% , 30-35%, 35-40%, 40-45%, 45-50%, 50-55%, 55-60%, 60-65%, 65-70%, 70-75%, or 75-80. Suspended in% by weight of non-polar solvent. Other non-polar solvents such as benzene and xylene can also be used. Head group capping agent represented in Figure 1 is an alkoxysilane, which may be attached to the surface of the ZrO ₂ nanocrystals. The tail group of the capping agent _{comprises a silicone polymer (silicone chain) in which the groups R 1} , R ₂ , R ₃ and R ₄ independently contain an alkyl, aryl, polyaryl or alkenyl group. Group _{R 1, R 2, R 3} , and _{R 4} are mutually may be arranged to form a random or block copolymer. In FIG. 1, the values of "m" and "n" can have a range of 0-60. R ₅ is a terminal group such as Si (CH ₃ ) ₃ , Si (CH ₃ ) ₂ H, Si (CH ₃ ) ₂ (CHCH ₂ ), or Si (CH ₃ ) ₂ (C ₄ H _9). good. The linker is used to connect the tail group to the head group and is composed of an alkyl group. In FIG. 1, the value of "x" may be in the range 0-8.

More specifically, the head group may contain a trimethoxysilyl group and the tail group may contain dimethyl silicone, methylphenyl silicone, or a combination of both. An example of the capping agent may include (MeO) ₃ Si- (CH ₂ ) _x -((Si (R ₅ , R ₆ ) ₂ O) _m- Si (Me ₂ ) C ₄ H ₉ here. R ₅ and R ₆ are independently methyl or phenyl. Capping agents have a value of "m" in the range of 1-100, preferably 2-15; x = 0-8, preferably 2-3. It may have a varying, linear or branched structure. ZrO ₂ nanocrystals comprising a silicone capping agent may be vinyltrimethoxysilane, allyltrimethoxysilane, 1-hexenylhexenyltrimethoxysilane, 1-octenyltri. Functional capping agents such as methoxysilane, or methyltrimethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, n-octyltrimethoxysilane, n-octyltriethoxysilane, n-dodecyltrimethoxysilane , N-Dodecyltriethoxysilane, n-hexadecyltrimethoxysilane, or octadecyltrimethoxysilane, and one or more capping agents composed of non-functional capping agents may optionally be included. Containing reactive chemical groups such as vinyl and allyl groups, further chemical reactions can be carried out.

Silicone capping agent, optionally, 1-5% ZrO ₂ nanocrystals, 5-10%, 10-15%, 15-20%, 20-25%, 25-30 percent, 30% to 35%, 35 40%, 40-45%, 45-50%, 50-55%, or 55-60% by weight is added to the suspension. The solution is 60-70 ° C, 70-80 ° C, 80-90 ° C, 90-100 ° C, 100-110 ° C, or 110-120 ° C for 1-10 minutes, 10-20 minutes, 20-30 minutes. It is heated for 30-40 minutes, 40-50 minutes, or 50-60 minutes. This method is followed by adding a second type of capping agent with an alkyl group to the reaction mixture. The amount of the second type of capping agent, 0-5% optionally ZrO ₂ nanocrystals, 5-10%, 10-15%, 15-20%, 20-25%, 25-30 percent, 30 It is added to the suspension by weight of 35%, 35-40%, 40-45%, 45-50%, 50-55%, or 55-60%. The solution is 60-70 ° C, 70-80 ° C, 80-90 ° C, 90-100 ° C, 100-110 ° C, or 110-120 ° C for 1-10 minutes, 10-20 minutes, 20-30 minutes. It is heated for 30-40 minutes, 40-50 minutes, or 50-60 minutes. The capped ZrO ₂ nanocrystals are obtained _{by precipitating the capped ZrO 2} nanocrystals using a polar solvent such as ethanol or methanol, redispersing the nanocrystals in a non-polar solvent such as toluene, hexane or heptane, and finally. The solvent is purified by centrifugation and removal and dried under vacuum. The dry, surface-modified silicone-capped ZrO ₂ nanocrystals are dispersed in a solvent to form a dispersion. Preferably, the solvent may contain one or more solvents composed of a non-polar solvent or a polar aprotic solvent, preferably an organic solvent, if desired. Preferred examples of suitable solvents may be selected from the group consisting of ethers, cyclic ethers, ketones, esters, mixed ether / ester solvents, hydrocarbons, aromatic solvents, and any mixture thereof. Examples of preferred ethers are 1-methoxy-2-propyl acetate and di-n-butyl ether (DBE). A preferred example of a preferred cyclic ether is tetrahydrofuran (THF). Examples of preferred esters are ethyl acetate and n-butyl acetate. Examples of preferred hydrocarbons are pentane, fexane, heptane, octane, nonane, decane, and cyclohexane. Examples of preferred aromatic solvents may be selected from the group consisting of benzene, toluene, ortho-xylene, meta-xylene, para-xylene, and any mixture thereof. Surface-modified silicone-capped ZrO ₂ nanocrystals are contained in a solvent at 1-5%, 5% -10%, 10% -15%, 15-20%, 20-25%, 25-30%. 30-35%, 35-40%, 40-45%, 45-50%, 50-55%, 55-60%, 60-65%, 65-70%, 70-75%, 75-80%, 80 to 85%, 85% to 90%, are dispersed in 90% to 95%, or 95-99% weight percent of ZrO ₂ nanocrystals. The solvent used in the formulation is selected or modified to suit the respective application used to apply the formulation of the invention to the LED. FIG. 2 shows a UV-Vis spectrum in which surface-modified silicone-capped ZrO ₂ is dispersed in xylene with an addition of 70.62% by weight. As shown in FIG. 3, the organic content of the surface-modified silicone-capped ZrO ₂ is 9.47%, which is calculated by Equation 1 in the TGA data:
Organic content = (1- (% mass at 700C /% mass at 200C)) * 100% Equation 1
As shown in FIG. 4, the particle size distribution of the surface-modified silicone-capped ZrO ₂ is measured by a dynamic light scattering device Zetasizer (Nano-S-Zen 1600).

In a preferred embodiment, the formulation of the invention may further contain one or more solvents. The solvent contained in the formulation comprising the polymer and surface-modified zirconium dioxide nanocrystals is not particularly limited as long as the composition of the formulation has sufficient solubility in it. Preferably, the solvent is
It may be a non-polar or polar aprotic solvent, preferably an organic solvent.

Preferred examples of suitable solvents may be selected from the group consisting of ethers, cyclic ethers, ketones, esters, mixed ether / ester solvents, hydrocarbons, aromatic solvents, and any mixture thereof.

Preferred examples of ethers are methyl-tert-butyl ether, di-ethyl ether, methyl-isobutyl ether, methyl-isopropyl ether, di-n-propyl ether, di-isopropyl ether, methyl-cyclopentyl ether, di-butyl- and di. -All isomers of pentyl ether, as well as polyethers such as ethylene glycol-dimethyl ether, ethylene glycol-diethyl ether, propylene glycol-dimethyl ether, propylene glycol-diethyl ether, diethylene glycol-dimethyl ether, and didipropylene glycol-dimethyl ether.

Preferred examples of cyclic ethers are tetrahydrofuran (THF), 2-methyl-tetrahydrofuran, 1,3-dioxolane, tetrahydropyran, and 1,4-dioxane.

Preferred examples of ketones are acetone, methyl ethyl ketone, methyl-isobutyl-ketone, 2- or 3-, n- or iso-pentanone, cyclopentanone, cyclohexanone, n- or iso-, 2- or 3-hexanone, n-. Or iso-, 2-, 3- or 4-heptanone.

Preferred examples of esters are methyl acetate, ethyl acetate, propyl acetate, butyl n-butyl acetate, butyl iso-butyl acetate, tert-butyl acetate, dimethyl adipic acid ester, methyl benzoate, dimethyl succinate, and γ-butyrolactone and γ-. Alternatively, it is a cyclic ester such as ε-valerolactone.

Preferred examples of mixed ether / ester solvents are 2-methoxy-propyl acetate (PGMEA), butyl glycol acetate, ethylene glycol-methyl ether-acetate and ethylene glycol-ethyl ether-acetate.

Preferred examples of hydrocarbons are linear hydrocarbons such as pentane, hexane, heptane, octane, nonane, decane, and branched isomers such as iso-octane, and cyclopentanone, cyclohexane and decalin. Cyclic hydrocarbons, and mixtures (eg, commonly known as benzine, petrol ether, white spirit and mineral spirit (eg, available as trade names Shellsol® and Isopar®)).

Preferred examples of aromatic solvents are selected from the group consisting of benzene, toluene, ortho-xylene, meta-xylene, para-xylene, chlorobenzene, dichlorobenzene, anisole, and methyl anisole, and any mixture thereof. It's okay.

The solvent used in the formulation is selected or modified to suit each method used to apply the formulation according to the invention to the LED.

Preferably, the total content of the polymer and surface-modified zirconium dioxide nanocrystals in the formulation is 1-5%, 5%, depending on the respective application used to apply the formulation according to the invention to the LED. 10%, 10% to 15%, 15 to 20%, 20 to 25%, 25 to 30%, 30 to 35%, 35 to 40%, 40 to 45%, 45 to 50%, 50 to 55%, 55-60%, 60-65%, 65-70%, 70-75%, 75-80%, 80-85%, 85-90%, 90-95%, or 95-99.9% by weight. The range. The formulations of the present invention may be applied by any known method such as dispensing, screen printing, stencil printing, spray coating, slot coating, and other methods such as spin coating and inkjet printing. ..

For example, when a spray coating is used, the total content of the polymer and surface-modified zirconium dioxide nanocrystals is 5-30% by weight, more preferably 5-25% by weight, and most preferably 5-20% by weight. It is preferably in the range of%.

For example, when a spray coating is used, a preferred solvent system comprises solvent A) having a boiling point <90 ° C. and solvent B) having a boiling point> 90 ° C. The low boiling point solvent A) is preferably an ester, ether and / or ketone solvent, and the high boiling point solvent B) is preferably an ester, ether, alkane and / or aromatic solvent.

Further, in the method for preparing the formulation of the present invention, the ^{polymer containing the first repeating unit M 1} and the second repeating unit M ² is mixed with the surface-modified dispersion of zirconium dioxide nanocrystals as described above. NS. In the dispersion, the surface-modified zirconium dioxide nanocrystals are dispersed in a liquid. Preferably, the surface-modified zirconium dioxide nanocrystals are dispersed in a liquid selected from the group consisting of ether solvents, ester solvents, aromatic solvents, and alkane solvents. Preferred ether solvents are dibutyl ether (DBE) and tetrahydrofuran (THF). A preferred ester solvent is butyl acetate (BuAc). Preferred aromatic solvents are benzene, toluene, and xylene. Preferred alkane solvents are pentane, hexane, heptane, octane, nonane, and decane. In addition, the polymer is preferably provided in the form of a solution. The solvent for the polymer is not particularly limited as long as the polymer can be dissolved in a sufficient amount. Typically, the polymer is dissolved in a suitable solvent that is the same as, similar to, or at least compatible with the liquid in which the surface-modified zirconium dioxide nanocrystals are dispersed.

Preferred examples of suitable solvents may be selected from the group consisting of ethers, cyclic ethers, ketones, esters, mixed ether / ester solvents, hydrocarbons, aromatic solvents, and any mixture thereof.

Preferred examples of ethers are methyl-tert-butyl ether, di-ethyl ether, methyl-isobutyl ether, methyl-isopropyl ether, di-n-propyl ether, di-isopropyl ether, methyl-cyclopentyl ether, di-butyl- and di. -All isomers of pentyl ether, as well as polyethers such as ethylene glycol-dimethyl ether, ethylene glycol-diethyl ether, propylene glycol-dimethyl ether, propylene glycol-diethyl ether, diethylene glycol-dimethyl ether and dipropylene glycol-dimethyl ether.

Preferred examples of cyclic ethers are tetrahydrofuran (THF), 2-methyl-tetrahydrofuran, 1,3-dioxolane, tetrahydropyran and 1,4-dioxane.

Preferred examples of ketones are acetone, methyl ethyl ketone, methyl-isobutyl-ketone, 2- or 3-, n- or iso-pentanone, cyclopentanone, cyclohexanone, n- or iso-, 2- or 3-hexanone, n-. Or iso-, 2-, 3- or 4-heptanone.

Preferred examples of esters are methyl acetate, ethyl acetate, propyl acetate, butyl n-butyl acetate, butyl iso-butyl acetate, tert-butyl acetate, dimethyl adipic acid ester, methyl benzoate, dimethyl succinate, and γ-butyrolactone and γ-. Alternatively, it is a cyclic ester such as ε-valerolactone.

Preferred examples of mixed ether / ester solvents are 2-methoxy-propyl acetate (PGMEA), butyl glycol acetate, ethylene glycol-methyl ether-acetate, and ethylene glycol-ethyl ether-acetate.

Preferred examples of hydrocarbons are linear hydrocarbons such as pentane, hexane, heptane, octane, nonane, decane, and branched isomers such as iso-octane, and cyclopentanone, cyclohexane and decalin. Cyclic hydrocarbons, and mixtures (eg, commonly known as benzine, petrol ether, white spirit and mineral spirit (eg, available as trade names Shellsol® and Isopar®)).

Preferred examples of aromatic solvents are selected from the group consisting of benzene, toluene, ortho-xylene, meta-xylene, para-xylene, chlorobenzene, dichlorobenzene, anisole, and methyl anisole, and any mixture thereof. It's okay.

The solvent used to prepare the formulation is selected or adjusted to suit the respective application method used in which the formulation of the invention is applied to the LED precursor. For example, during solvent distillation and simultaneous film formation, the dispersibility of surface-modified zirconium dioxide nanocrystals should not be reduced and material aggregation should not occur. This may form particles like structures that prevent the coating from being transparent to visible light. Good coating results and reliable data are achieved by using solvents such as ethers, esters, ketones, hydrocarbons, and aromatic solvents.

Preferably, the formulation is one or more additives selected from the group consisting of converters, viscosity modifiers, surfactants, additives that affect film formation, additives that affect evaporation behavior, and crosslinkers. May include. Most preferably, the formulation further comprises a converter.

In a preferred embodiment, a surface-modified dispersion of zirconium dioxide nanocrystals is added to and mixed with the polymer solvent. Instead of this preferred form, a solution of polymer may be added to and mixed with a surface-modified dispersion of zirconium dioxide nanocrystals.

The formulation of the present invention is preferably prepared at room temperature, i.e. 25 ° C., but may be prepared, for example, at a temperature rise of 25-50 ° C.

In addition, the sealing material
(A) To provide a formulation according to the invention; and (b) a sealing material for an LED obtained by curing the formulation at a temperature of 70-300 ° C. for 1-24 hours. Is provided.

The cure of step (b) is performed on a hot plate, in a furnace, or in an artificial climate chamber.

Preferably, the cure of step (b) is carried out on a hot plate at a temperature of 100-280 ° C., more preferably 120-270 ° C., most preferably 150-250 ° C.

In an alternative preferred embodiment, the cure of step (b) is carried out in a furnace at a temperature of 100-280 ° C., more preferably 120-270 ° C., most preferably 150-250 ° C.

In an alternative preferred embodiment, the cure of step (b) is 70-95 in an artificial climate room having a relative humidity in the range of 50-99%, more preferably 60-95%, most preferably 80-90%. It is carried out at a temperature of ° C., more preferably 80 to 90 ° C.

Preferably, the cure time is 2 to 20 hours, more preferably 3 to 18 hours, most preferably 4 to 16 hours, depending on the film thickness, the monomer composition of the polymer, and the cure method.

Further provided are LEDs comprising a sealing material according to the present invention. Here, a particularly preferable LED is an LED including a semiconductor light source (LED chip) and at least one converter (preferably a phosphor or a quantum material). LEDs are preferably white light emitting, or a specific color point (color on demand principle). The color-on-demand concept is intended to mean producing light having a specific color point using a pc-LED (= phosphor conversion LED) using one or more phosphors.

In a preferred form of the LED according to the present invention, a semiconductor light source (LED chips) are light emitting indium aluminum gallium nitride, in particular of the formula _In i _Ga j _Al k N (where, 0 ≦ i, 0 ≦ j , 0 ≦ k, and i + j + k = 1). These are light emitting LED chips having various structures.

In a further preferred embodiment of the LED according to the invention, the LED is a ZnO, TCO (Transparent Conductive Oxide), ZnSe or SiC based luminescent arrangement.

In a more preferred form of the light source according to the invention, the LED is a light source that exhibits electroluminescence and / or photoluminescence.

The sealing material of the present invention is preferably contained in the converter layer of the LED. Preferably, the converter layer comprises an encapsulating material and a converter (more preferably a fluorescent material and / or a quantum material). The converter layer may be placed directly on the semiconductor light source (LED chip) or instead placed away from it, depending on the application (the latter placement is also known as "remote phosphor technology". include). Remote fluorophore technology is known to those of skill in the art and is disclosed, for example, in the following literature: Japanese J. et al. of Appl. Phys. Vol. 44, No. 21 (2005), L649-L651.

The optical coupling between the semiconductor light source (LED chip) and the converter layer can be achieved by a photoconducting arrangement. This allows the semiconductor to be incorporated in a central position and optically coupled to the converter layer by a photoconducting device such as an optical fiber. In this way, it is possible to make a lamp that fits the wishes of illumination, consisting simply of one or various phosphors that can be arranged to form an optical screen, and an optical waveguide that is coupled to a light source. be. In this way, a strong light source is placed in a preferred position for electrical installation and includes a fluorophore that is bound only by providing an optical waveguide at any position without additional electrical cables in the optical waveguide instead. It is possible to install a lamp.

Preferably, the converter is a phosphor, i.e. a substance having luminescent properties. The term "luminescence" is intended to include both phosphorescence and fluorescence.

For the purposes of this application, the type of phosphor is not particularly limited. Suitable fluorophores are well known to those of skill in the art and can be easily obtained from commercial sources. For the purposes of this application, the term "fluorescent" is intended to include substances that absorb at one wavelength of the electromagnetic spectrum and emit at different wavelengths.

An example of a suitable phosphor is a particulate inorganic fluorescent material comprising one or more emission centers. Such luminescent centers are, for example, atoms or ions, so-called activators, preferably selected from the group consisting of rare earth elements, transition metal elements, main group elements, and any combination thereof. It may be formed by use. Examples of suitable rare earth elements may be selected from the group consisting of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. Examples of suitable transition metal elements may be selected from the group consisting of Cr, Mn, Fe, Co, Ni, Cu, Ag, Au and Zn. Examples of suitable main group elements may be selected from the group consisting of Na, Tl, Sn, Sb and Bi. Examples of suitable phosphors are garnet, silicate, orthosilicate, thiogallate, sulfide, nitride, silicon-based oxynitride, nitrid silicate, nitridoaluminum silicate, oxonitrid silicate, oxonitri. Includes doaluminum silicate and rare earth-doped sialon-based phosphors.

Suitable yellow phosphors are Ce-doped (Gd, Y), for example, commercially available, cerium-doped yttrium aluminum garnet (often abbreviated as "Ce: YAG" or "YAG: Ce"). ₃ (Al, Ga) ₅ O ₁₂ ; or M-doped, selected from the group consisting of Y, Gd, La and Lu, Th _3-x M _x O ₁₂ : Ce (TAG); or Sr _{2-x- y} Ba _x C _y SiO ₄ : Contains or is based on Eu.

Examples of the green _{phosphor, SrGa 2 S 4: Eu;} Sr 2-y Ba y SiO 4: Eu and / or SrSi ₂ O ₂ N _2: may be selected from the group consisting of Eu.

The phosphors used as converters in the converter layer of the LED are, for example: Ba ₂ SiO ₄ : Eu ²⁺ , BaSi ₂ O ₅ : Pb ²⁺ , Ba _x Sr _1-x F ₂ : Eu ²⁺ , BaSrMgSi ₂ O ₇ : Eu ²⁺ , BaTiP ₂ O ₇ , (Ba, Ti) ₂ P ₂ O ₇ : Ti, Ba ₃ WO ₆ : U, BaY ₂ F ₈ : Er ³⁺ , Yb ⁺ , Be ₂ SiO ₄ : Mn ²⁺ , Bi ₄ Ge ₃ O ₁₂ , CaAl ₂ O ₄ : Ce ³⁺ , CaLa ₄ O ₇ : Ce ³⁺ , CaAl ₂ O ₄ : Eu ²⁺ , CaAl ₂ O ₄ : Mn ²⁺ , CaAl ₄ O ₇ : Pb ²⁺ , Mn ²⁺ , CaAl ₂ O ₄ : Tb ³⁺ , Ca ₃ Al ₂ Si ₃ O ₁₂ : Ce ³⁺ , Ca ₃ Al ₂ Si ₃ O ₁₂ : Eu ²⁺ , Ca ₂ B ₅ O ₉ Br: Eu ²⁺ , Ca ₂ B ₅ O ₉ Cl: Eu ²⁺ , Ca ₂ B ₅ O ₉ Cl: Pb ²⁺ , CaB ₂ O ₄ : Mn ²⁺ , Ca ₂ B ₂ O ₅ : Mn ²⁺ , CaB ₂ O ₄ : Pb ²⁺ , CaB ₂ P ₂ O ₉ : Eu ²⁺ , Ca ₅ B ₂ SiO ₁₀ : Eu ³⁺ , Ca _0.5 Ba _0.5 Al ₁₂ O ₁₉ : Ce ³⁺ , Mn ²⁺ , Ca ₂ Ba ₃ (PO ₄ ) ₃ Cl: Eu ²⁺ , CaBr ₂ : Eu ²⁺ in SiO ₂ , CaCl ₂ : Eu ²⁺ in SiO ₂ , CaCl ₂ : Eu ²⁺ , Mn ²⁺ in SiO ₂ , CaF ₂ : Ce ³⁺ , CaF ₂ : Ce ³⁺ , Mn ²⁺ , CaF ₂ : Ce ³⁺ , Tb ³⁺ , CaF ₂ : Eu ²⁺ , CaF ₂ : Mn ²⁺ , CaF ₂ : U, CaGa ₂ O ₄ : Mn ²⁺ , CaGa ₄ O ₇ : Mn ²⁺ , CaGa ₂ S ₄ : Ce ³⁺ , CaGa ₂ S ₄ : Eu ²⁺ , CaGa ₂ S ₄ : Mn ^{_{2+, CaGa 2 S 4: Pb}} 2+, CaGeO 3: Mn 2+, CaI 2: Eu 2+ in SiO 2, CaI 2: Eu 2+, Mn 2+ in SiO 2 , CaLaBO ₄ : Eu ³⁺ , CaLaB ₃ O ₇ : Ce ³⁺ , Mn ²⁺ , Ca ₂ La ₂ BO ₆ . ^{_{5: Pb 2+, Ca 2 MgSi}} 2 O 7, Ca 2 MgSi 2 O 7: Ce 3+, CaMgSi 2 O 6: Eu 2+, Ca 3 MgSi 2 O 8: Eu 2+, Ca 2 MgSi 2 O 7: Eu 2+, CaMgSi ₂ O ₆ : Eu ²⁺ , Mn ²⁺ , Ca ₂ MgSi ₂ O ₇ : Eu ²⁺ , Mn ²⁺ , CaMoO ₄ , CaMoO ₄ : Eu ³⁺ , CaO: Bi ³⁺ , CaO: Cd ²⁺ , CaO: Cu ⁺ , CaO: Eu ³⁺ , CaO: Eu ³⁺ , Na ⁺ , CaO: Mn ²⁺ , CaO: Pb ²⁺ , CaO: Sb ³⁺ , CaO: Sm ³⁺ , CaO: Tb ³⁺ , CaO: Tl, CaO: Zn ²⁺ ,
Ca ₂ P ₂ O ₇ : Ce ³⁺ , α-Ca ₃ (PO ₄ ) ₂ : Ce ³⁺ , β-Ca ₃ (PO ₄ ) ₂ : Ce ³⁺ , Ca ₅ (PO ₄ ) ₃ Cl: Eu ²⁺ , Ca ₅ (PO ₄ ) ₃ Cl: Mn ²⁺ , Ca ₅ (PO ₄ ) ₃ Cl: Sb ³⁺ , Ca ₅ (PO ₄ ) ₃ Cl: Sn ²⁺ , β-Ca ₃ (PO ₄ ) ₂ : Eu ²⁺ , Mn ²⁺ , Ca ₅ (PO ₄ ) ₃ F: Mn ²⁺ , Ca ₅ (PO ₄ ) ₃ F: Sb ³⁺ , Ca ₅ (PO ₄ ) ₃ F: Sn ²⁺ , α-Ca ₃ (PO ₄ ) ₂ : Eu ²⁺ , β -Ca ₃ (PO ₄ ) ₂ : Eu ²⁺ , Ca ₂ P ₂ O ₇ : Eu ²⁺ , Ca ₂ P ₂ O ₇ : Eu ²⁺ , Mn ²⁺ , CaP ₂ O ₆ : Mn ²⁺ , α-Ca ₃ (PO ₄₎ ) ₂ : Pb ²⁺ , α-Ca ₃ (PO ₄ ) ₂ : Sn ²⁺ , β-Ca ₃ (PO ₄ ) ₂ : Sn ²⁺ , β-Ca ₂ P ₂ O ₇ : Sn, Mn, α-Ca ₃ ( PO ₄ ) ₂ : Tr, CaS: Bi ³⁺ , CaS: Bi ³⁺ , Na, CaS: Ce ³⁺ , CaS: Eu ²⁺ , CaS: Cu ⁺ , Na ⁺ , CaS: La ³⁺ , CaS: Mn ²⁺ , CaSO ₄ : Bi, CaSO ₄ : Ce ³⁺ , CaSO ₄ : Ce ³⁺ , Mn ²⁺ , CaSO ₄ : Eu ²⁺ , CaSO ₄ : Eu ²⁺ , Mn ²⁺ , CaSO ₄ : Pb ²⁺ , CaS: Pb ²⁺ , CaS: Pb ²⁺ , Cl CaS: Pb ²⁺ , Mn ²⁺ , CaS: Pr ³⁺ , Pb ²⁺ , Cl, CaS: Sb ³⁺ , CaS: Sb ³⁺ , Na, CaS: Sm ³⁺ , CaS: Sn ²⁺ , CaS: Sn ²⁺ , F, CaS: Tb ³⁺ , CaS: Tb ³⁺ , Cl, CaS: Y ³⁺ , CaS: Yb ²⁺ , CaS: Yb ²⁺ , Cl, CaSiO ₃ : Ce ³⁺ , Ca ₃ SiO ₄ Cl ₂ : Eu ²⁺ , Ca ₃ SiO ₄ Cl ₂ : Pb ²⁺ , CaSiO ₃ : Eu ²⁺ , CaSiO ₃ : Mn ²⁺ , Pb, CaSiO ₃ : Pb ²⁺ , CaSiO ₃ : Pb ²⁺ , Mn ²⁺ , CaSiO ₃ : Ti ⁴⁺ , CaSr ₂ (PO ₄ ) ₂ : Bi ³⁺ , β- (Ca, Sr) ₃ (PO ₄ ) ₂ : Sn ²⁺ Mn ²⁺ , CaTi _0.9 Al _{0 .1} O ₃ : Bi ³⁺ , CaTIO ₃ : Eu ³⁺ , CaTIO ₃ : Pr ³⁺ , Ca ₅ (VO ₄ ) ₃ Cl, CaWO ₄ , CaWO ₄ : Pb ²⁺ , CaWO ₄ : W, Ca ₃ WO ₆ : U, ^{_{CaYAlO 4: Eu 3+, CaYBO 4}} : Bi 3+, CaYBO 4: Eu 3+, CaYB 0, 8 O 3, 7: Eu 3+, CaY 2 ZrO 6: Eu 3+, (Ca, Zn, Mg) 3 (PO 4) ₂ : Sn, CeF ₃ , (Ce, Mg) BaAl ₁₁ O ₁₈ : Ce, (Ce, Mg) SrAl ₁₁ O ₁₈ : Ce, CeMgAl ₁₁ O ₁₉ : Ce: Tb, Cd ₂ B ₆ O ₁₁ : Mn ²⁺ , CdS: Ag ⁺ , Cr, CdS: In, CdS: In, CdS: In, Te, CdS: Te, CdWO ₄ , CsF, Csl, CsI: Na ⁺ , CsI: Tl, (ErCl ₃ ) _0.25 (BaCl) ₂ ) _0.75 , GaN: Zn, Gd ₃ Ga ₅ O ₁₂ : Cr ³⁺ , Gd ₃ Ga ₅ O ₁₂ : Cr, Ce, GdNbO ₄ : Bi ³⁺ , Gd ₂ O ₂ S: Eu ³⁺ , Gd ₂ O ₂ SPr ³⁺ , Gd ₂ O ₂ S: Pr, Ce, F, Gd ₂ O ₂ S: Tb ³⁺ , Gd ₂ SiO ₅ : Ce ³⁺ , KAI ₁₁ O ₁₇ : Tl ⁺ , KGa ₁₁ O ₁₇ : Mn ²⁺ , K _{2 la 2 Ti 3 O 10: Eu} , KMgF 3: Eu 2+, KMgF 3: Mn 2+, K 2 SiF 6: Mn 4+, LaAl 3 B 4 O 12: Eu 3+, LaAlB 2 O 6: Eu 3+, LaAlO 3: ^{_{Eu 3+, LaAlO 3: Sm 3+}} , LaAsO 4: Eu 3+, LaBr 3: Ce 3+, LaBO 3: Eu 3+, (La, Ce, Tb) PO 4: Ce: Tb, LaCl 3: Ce 3+, La 2 O ₃ : Bi ³⁺ , LaOBr: T ^{b 3+, LaOBr: Tm 3+,} LaOCl: Bi 3+, LaOCl: Eu 3+, LaOF: Eu 3+, La 2 O 3: Eu 3+, La 2 O 3: Pr 3+, La 2 O 2 S: Tb 3+, LaPO 4 ^{_{: Ce 3+, LaPO 4: Eu}} 3+, LaSiO 3 Cl: Ce 3+, LaSiO 3 Cl: Ce 3+, Tb 3+, LaVO 4: Eu 3+, La 2 W 3 O 12: Eu 3+, LiAlF 4: Mn 2+, LiAl ₅ O ₈ : Fe ³⁺ , LiAlO ₂ : Fe ³⁺ , LiAlO ₂ : Mn ²⁺ , LiAl ₅ O ₈ : Mn ²⁺ , Li ₂ CaP ₂ O ₇ : Ce ³⁺ , Mn ²⁺ , LiCeBa ₄ Si ₄ O ₁₄ : Mn ²⁺ , ^{_{LiCeSrBa 3 Si 4 O 14: Mn}} 2+, LiInO 2: Eu 3+, LiInO 2: Sm 3+, LiLaO 2: Eu 3+, LuAlO 3: Ce 3+, (Lu, Gd) 2 SiO 5: Ce 3+, Lu 2 SiO 5 : Ce ³⁺ , Lu ₂ Si ₂ O ₇ : Ce ³⁺ , LuTaO ₄ : Nb ⁵⁺ , Lu _1-x Y _x AlO ₃ : Ce ³⁺ , MgAl ₂ O ₄ : Mn ²⁺ , MgSrAl ₁₀ O ₁₇ : Ce, MgB _{2 4} : Mn ²⁺ , MgBa ₂ (PO ₄ ) ₂ : Sn ²⁺ , MgBa ₂ (PO ₄ ) ₂ : U, MgBaP ₂ O ₇ : Eu ²⁺ , MgBaP ₂ O ₇ : Eu ²⁺ , Mn ²⁺ , MgBa ₃ Si ₂ O ₈ : Eu ²⁺ , MgBa (SO ₄ ) ₂ : Eu ²⁺ , Mg ₃ Ca ₃ (PO ₄ ) ₄ : Eu ²⁺ , MgCaP ₂ O ₇ : Mn ²⁺ , Mg ₂ Ca (SO ₄ ) ₃ : Eu ²⁺ , Mg ₂ Ca (SO ₄ ) ₃ : Eu ²⁺ , Mn ² , MgCeAl ₁₁ O ₁₉ : Tb ³⁺ , Mg ₄ (F) GeO ₆ : Mn ²⁺ , Mg ₄ (F) (Ge, Sn) O ₆ : Mn ²⁺ , MgF ₂ : Mn ²⁺ , MgGa ₂ O ₄ : Mn ²⁺ , Mg ₈ Ge ₂ O ₁₁ F ₂ : Mn ⁴⁺ , MgS: Eu ²⁺ , MgSiO ₃ : Mn ²⁺ , Mg ₂ SiO ₄ : Mn ²⁺ , Mg ₃ SiO ₃ F ₄ : Ti ⁴⁺ , dsm ₄ : Eu ²⁺ , dsm ₄ : Pb ²⁺ , (Mg, Sr) Ba ₂ Si ₂ O ₇ : Eu ²⁺ , MgSrP ₂ O ₇ : Eu ²⁺ , MgSr ₅ (PO ₄ ) ₄ : Sn ²⁺ , MgSr ₃ Si ₂ O ₈ : Eu ²⁺ , Mn ²⁺ , Mg ₂ Sr (SO ₄ ) ₃ : Eu ²⁺ , Mg ₂ TIO ₄ : Mn ⁴⁺ , MgWO ₄ , MgYBO ₄ : Eu ³⁺ , Na ₃ Ce (PO ₄ ) ₂ : Tb ³⁺ , NaI: Tl, Na ₁ . ₂₃ K ₀ . ₄₂ Eu ₀ . ₁₂ TiSi ₄ O ₁₁ : Eu ³⁺ , Na _1.23 K _0.42 Eu _0.12 TiSi ₅ O ₁₃ · xH ₂ O: Eu ³⁺ , Na _1.29 K _0.46 Er _0.08 TiSi ₄ O ₁₁ : Eu ³⁺ , Na ₂ Mg ₃ Al ₂
Si ₂ O ₁₀ : Tb, Na (Mg _2-x Mn _x ) LiSi ₄ O ₁₀ F ₂ : Mn, NaYF ₄ : Er ³⁺ , Yb ³⁺ , NaYO ₂ : Eu ³⁺ , P46 (70%) + P47 (30%) ^{_{, SrAl 12 O 19: Ce 3+}} , Mn 2+, SrAl 2 O 4: Eu 2+, SrAl 4 O 7: Eu 3+, SrAl 12 O 19: Eu 2+, SrAl 2 S 4: Eu 2+, Sr 2 B 5 O 9 Cl: Eu ²⁺ , SrB ₄ O ₇ : Eu ²⁺ (F, Cl, Br), SrB ₄ O ₇ : Pb ²⁺ , SrB ₄ O ₇ : Pb ²⁺ , Mn ²⁺ , SrB ₈ O ₁₃ : Sm ²⁺ , Sr _x Ba _y Cl _z Al ₂ O _{4-z / 2} : Mn ²⁺ , Ce ³⁺ , SrBaSiO ₄ : Eu ²⁺ , Sr (Cl, Br, I) ₂ : Eu ²⁺ in SiO ₂ , SrCl ₂ : Eu ²⁺ in SiO ₂ , Sr _{5 Cl (PO 4) 3:} Eu, Sr w F x B 4 O 6.5: Eu 2+, Sr w F x B y O z: Eu 2+, Sm 2+, SrF 2: Eu 2+, SrGa 12 O 19: Mn ²⁺ , SrGa ₂ S ₄ : Ce ³⁺ , SrGa ₂ S ₄ : Eu ²⁺ , SrGa ₂ S ₄ : Pb ²⁺ , SrIn ₂ O ₄ : Pr ³⁺ , Al ³⁺ , (Sr, Mg) ₃ (PO ₄ ) ₂ Sn, SrMgSi ₂ O ₆ : Eu ²⁺ , Sr ₂ MgSi ₂ O ₇ : Eu ^2
+ , Sr ₃ MgSi ₂ O ₈ : Eu ²⁺ , SrMoO ₄ : U, SrO · 3B ₂ O ₃ : Eu ²⁺ , Cl, β-SrO · 3B ₂ O ₃ : Pb ²⁺ , β-SrO · 3B ₂ O ₃ : _{^{pb 2+, Mn 2+, α-}} SrO · 3B 2 O 3: Sm 2+, Sr 6 P 5 BO 20: Eu, Sr 5 (PO 4) 3 Cl: Eu 2+, Sr 5 (PO 4) 3 Cl: Eu 2+ , Pr ³⁺ , Sr ₅ (PO ₄ ) ₃ Cl: Mn ²⁺ , Sr ₅ (PO ₄ ) ₃ Cl: Sb ³⁺ , Sr ₂ P ₂ O ₇ : Eu ²⁺ , β-Sr ₃ (PO ₄ ) ₂ : Eu ²⁺ , Sr ₅ (PO ₄ ) ₃ F: Mn ²⁺ , Sr ₅ (PO ₄ ) ₃ F: Sb ³⁺ , Sr ₅ (PO ₄ ) ₃ F: Sb ³⁺ , Mn ²⁺ , Sr ₅ (PO ₄ ) ₃ F: Sn ²⁺ , Sr ₂ P ₂ O ₇ : Sn ²⁺ , β-Sr ₃ (PO ₄ ) ₂ : Sn ²⁺ , β-Sr ₃ (PO ₄ ) ₂ : Sn ²⁺ , Mn ²⁺ (Al), SrS: Ce ³⁺ , SrS _{^{: Eu 2+, SrS: Mn 2+}} , SrS: Cu +, Na, SrSO 4: Bi, SrSO 4: Ce 3+, SrSO 4: Eu 2+, SrSO 4: Eu 2+, Mn 2+, Sr 5 Si 4 O 10 Cl 6 ^{_{: Eu 2+, Sr 2 SiO 4}} : Eu 2+, SrTiO 3: Pr 3+, SrTiO 3: Pr 3+, Al 3+, Sr 3 WO 6: U, SrY 2 O 3: Eu 3+, ThO 2: Eu 3+, ThO 2 : Pr ³⁺ , ThO ₂ : Tb ³⁺ , YAl ₃ B ₄ O ₁₂ : Bi ³⁺ , YAl ₃ B ₄ O ₁₂ : Ce ³⁺ , YAl ₃ B ₄ O ₁₂ : Ce ³⁺ , Mn, YAl ₃ B ₄ O _{12 ^{3+, Tb 3+, YAl 3 B}} 4 O 12: Eu 3+, YAl 3 B 4 O 12: Eu 3+, Cr 3+, YAl 3 B 4 O 12: Th 4+, Ce 3+, Mn 2+, YAlO 3: Ce 3+, Y ₃ Al ₅ O ₁₂ : Ce ³⁺ , Y ₃ Al ₅ O ₁₂ : Cr ³⁺ , YAlO ₃ : Eu ³⁺ , Y ₃ Al ₅ O ₁₂ : Eu ^3r , Y ₄ Al ₂ O ₉ : Eu ³⁺ , Y ₃ Al ₅ O ₁₂ : Mn ⁴⁺ , YAlO ₃ : Sm ^{3+ _{3: Tb 3+, Y 3 Al}} 5 O 12: Tb 3+, YAsO 4: Eu 3+, YBO 3: Ce 3+, YBO 3: Eu 3+, YF 3: Er 3+, Yb 3+, YF 3: Mn 2+, YF 3 : Mn ²⁺ , Th ⁴⁺ , YF ₃ : Tm ³⁺ , Yb ³⁺ , (Y, Gd) BO ₃ : Eu, (Y, Gd) BO ₃ : Tb, (Y, Gd) ₂ O ₃ : Eu ³⁺ , Y _{1 .34} Gd _0.60 O ₃ (Eu, Pr), Y ₂ O ₃ : Bi ³⁺ , YOBr: Eu ³⁺ , Y ₂ O ₃ : Ce, Y ₂ O ₃ : Er ³⁺ , Y ₂ O ₃ : Eu ³⁺ ( YOE), Y ₂ O ₃ : Ce ³⁺
, Tb ³⁺ , YOCl: Ce ³⁺ , YOCl: Eu ³⁺ , YOF: Eu ³⁺ , YOF: Tb ³⁺ , Y ₂ O ₃ : Ho ³⁺ , Y ₂ O ₂ S: Eu ³⁺ , Y ₂ O ₂ S: Pr ³⁺ , ^{_{Y 2 O 2 S: Tb 3+}} , Y 2 O 3: Tb 3+, YPO 4: Ce 3+, YPO 4: Ce 3+, Tb 3+, YPO 4: Eu 3+, YPO 4: Mn 2+, Th 4+, YPO 4: ^{_{V 5+, Y (P, V}} ) O 4: Eu, Y 2 SiO 5: Ce 3+, YTaO 4, YTaO 4: Nb 5+, YVO 4: Dy 3+, YVO 4: Eu 3+, ZnAl 2 O 4: Mn 2+ , ZnB ₂ O ₄ : Mn ²⁺ , ZnBa ₂ S ₃ : Mn ²⁺ , (Zn, Be) ₂ SiO ₄ : Mn ²⁺ , Zn _0.4 Cd _0.6 S: Ag, Zn _0.6 Cd _0.4 S : Ag, (Zn, Cd) S: Ag, Cl, (Zn, Cd) S: Cu, ZnF ₂ : Mn ²⁺ , ZnGa ₂ O ₄ , ZnGa ₂ O ₄ : Mn ²⁺ , ZnGa ₂ S ₄ : Mn ²⁺ , Zn ₂ GeO ₄ : Mn ²⁺ , (Zn, Mg) F ₂ : Mn ²⁺ , ZnMg ₂ (PO ₄ ) ₂ : Mn ²⁺ , (Zn, Mg) ₃ (PO ₄ ) ₂ : Mn ²⁺ , ZnO: Al ³⁺ , Ga ³⁺ , ZnO: Bi ³⁺ , ZnO: Ga ³⁺ , ZnO: Ga, ZnO-CdO: Ga, ZnO: S, ZnO: Se, ZnO: Zn, ZnS: Ag ⁺ , Cl ⁻ , ZnS: Ag, Cu, Cl , ZnS: Ag, Ni, ZnS: Au, In, ZnS-CdS (25-75), ZnS-CdS (50-50), ZnS-CdS (75-25), ZnS-CdS: Ag, Br, Ni, ^{ZnS-CdS: Ag +, Cl} , ZnS-CdS: Cu, Br, ZnS-CdS: Cu, I, ZnS: Cl -, ZnS: Eu 2+, ZnS: Cu, ZnS: Cu +, Al 3+, ZnS: Cu ⁺ , Cl ⁻ , ZnS: Cu, Sn, ZnS: Eu ²⁺ , ZnS: Mn ²⁺ , ZnS: Mn, Cu, ZnS: Mn ²⁺ , Te ²⁺ , ZnS: P, ZnS: P ^3- , Cl ⁻ , ZnS: Pb ²⁺ , ZnS: Pb ²⁺ , Cl ⁻ , ZnS: Pb, Cu, Zn ₃ (PO ₄ ) ₂ : Mn ²⁺ , Zn ₂ SiO ₄ : Mn ²⁺ , Zn ₂ SiO ₄ : Mn ²⁺ , As ⁵⁺ , Zn ₂ SiO ₄ : Mn, Sb ₂ O ₂ , Zn ₂ SiO ₄ : Mn ²⁺ , P, Zn ₂ SiO ₄ : Ti ⁴⁺ , ZnS: Sn ²⁺ , ZnS: Sn, Ag, ZnS: Sn ²⁺ , Li ⁺ , ZnS: Te, Mn, ZnS-ZnTe: Mn ²⁺ , ZnSe: Cu ⁺ , Cl and / or ZnWO ₄ .

Finally, the present invention provides a method for manufacturing an LED, which comprises the following steps.
(A) Applying the formulation according to the invention to the LED precursor; and (b) curing the formulation at a temperature of 70-300 ° C. for 1-24 hours.

Preferably, the LED precursor comprises a semiconductor light source (LED chip) and / or a lead frame and / or a gold wire and / or a solder (flip chip). The LED precursor further optionally includes a converter and / or a first optical system and / or a second optical system.

The converter layer may be arranged directly on the semiconductor light source (LED chip) or may be arranged away from it, depending on the intended use. The encapsulant material forms a barrier to the external environment of the LED device, thereby protecting the converter and / or the LED chip. The encapsulant material preferably comes into direct contact with the converter and / or LED chip. The encapsulating material is a portion of the LED package comprising an LED chip and / or a lead frame and / or a gold wire and / or a solder (flip chip), a filling material, a converter, and first and second optics. Is.

It is also preferred that the formulation applied to the LED precursor in step (a) form a portion of the converter layer. It is also further preferred that the converter layer be placed in direct contact with or away from the LED.

Preferably, the converter layer further comprises a converter such as the fluorophore and / or quantum material described above.

More preferably, the formulation is applied to the LED as the layer of step (a) with a film thickness of 1 μm to 1 cm, more preferably 10 μm to 1 mm. In a preferred embodiment, the formulation is applied as a thin film having a film thickness of 1 μm to 200 μm, more preferably 5 μm to 150 μm, most preferably 10 μm to 100 μm. In an alternative preferred embodiment, the formulation is applied as a thick film having a film thickness of 200 μm to 1 cm, more preferably 200 μm to 5 mm and most preferably 200 μm to 1 mm.

The formulations of the present invention are applied by any suitable application method such as dispensing, screen printing, stencil printing, spray coating, slot coating, and other methods. Alternatively, the formulation may be applied by other suitable methods such as spin coating or inkjet printing.

For spray coating, high dilution is required and a typical spray coating formulation has a total solvent content of 70-95% by weight. Due to the very high solvent content in the spray coating formulation, the spray coating formulation is very sensitive to the type of solvent. Spray coating formulation, be made from high and low boiling mixture of solvent is generally known (e.g., Organic ^Coatings:. Science and ^{Technology, Z.W.Wicks et al, page482,3 rd} Edition ( 2007), John Willey & Sons, Inc.).

For example, when spray coating is used, the total content of the polymer and surface-modified zirconium dioxide nanocrystals and converters is 5-30% by weight, more preferably 5-25% by weight, most preferably 5-20% by weight. It is preferably in the range of. Solutions for typical spray coating are 2-5% by weight polymer, 4-12% by weight surface-modified zirconium dioxide nanocrystals, 6-20% by weight converter, 70-90% by weight solvent, and <1. Weight% The sum of the weight percent of each composition of the spray coating formulation, including other additives, is 100% by weight. The solvent is, as described above, a pure solvent or a mixture of several solvents.

The viscosity of a suitable formulation is preferably at least 1 mPa · s and up to 100,000 mPa · s and is measured by the method described in the test method. Depending on the application of the formulation, the viscosity of the formulation may be adjusted, if desired, for example by varying the temperature at which the composition is coated between 10 ° C and 60 ° C. Usually, the low viscosity is in the range of 1 to 100 mPa · s, and the high viscosity is usually larger than 100 mPa · s.

Solvent systems for preferred spray coating applications are formed from two groups of solvents A) and B). A) is one solvent or a mixture of two solvents, which is characterized by having a boiling point of <90 ° C. Preferred solvents for Group A) are esters such as methyl acetate or ethyl acetate, ethers such as THF, and ketones such as methyl ethyl ketone. B) is one solvent or a mixture of two solvents, characterized by having a boiling point of> 90 ° C. Preferred solvents in Group B) are esters such as butyl acetate, ethers such as dibutyl ether, and alkanes such as heptane, octane, nonane, or decane, and aromatic solvents such as benzene, toluene, or xylene. be.

After being applied to the LED precursor in step (a), the formulation is cured in step (b) at a temperature of 70-300 ° C. for 1-24 hours.

Preferably, the cure of step (b) is performed on a hot plate, in a furnace, or in an artificial climate chamber.

Preferably, the cure of step (b) is carried out on a hot plate at a temperature of 100-280 ° C., more preferably 120-270 ° C., most preferably 150-250 ° C.

In an alternative preferred embodiment, the cure of step (b) is carried out in a furnace at a temperature of 100-280 ° C., more preferably 120-270 ° C., most preferably 150-250 ° C.

In an alternative preferred embodiment, the cure of step (b) is 70-95 in an artificial climate room having a relative humidity in the range of 50-99%, more preferably 60-95%, most preferably 80-90%. It is carried out at a temperature of ° C., more preferably 80 to 90 ° C.

Preferably, the cure time is 2 to 20 hours, more preferably 3 to 18 hours, most preferably 4 to 16 hours, depending on the film thickness, the monomer composition of the polymer, and the cure method.

The LEDs according to the invention may be used, for example, in liquid crystal (LC) display backlights, traffic signal lights, outdoor displays, billboards, and general lighting, to name just a few non-limiting examples.

Typical LED packages according to the invention are LED chips and / or lead frames and / or gold wires and / or solder (flip chips) and / or filling materials, converters, encapsulants of the invention, and first. And a second optical system is included. The encapsulant has the function of a surface protector against the influence of the external environment and guarantees long-term reliability, especially stability over time. For example, according to the present invention, the light emitting diodes are configured similar to those described in US6,274,924B1 and US6,204,523B1.

Further, the LED filament disclosed in US2014 / 0369036A1 may be prepared by using the sealing material of the present invention as a package adhesive layer. Such an LED filament includes a substrate, a light emitting unit fixed to at least one surface of the substrate, and a package adhesive layer surrounding the periphery of the light emitting unit. The shape of the substrate is determined to form the stretchable bar. The light emitting unit includes a plurality of blue light emitting chips and red light emitting chips which are usually dispersed on a substrate and subsequently connected to each other in order. The package adhesive layer is formed from a sealing material according to the invention, including a converter.

The present invention will be further described by the following examples, but should not be considered limiting in any way. Those skilled in the art will make the invention without departing from the spirit and scope of the invention set forth in the appended claims.

The molecular weight of the polymer was measured by GPC relative to the polystyrene standard. As the eluent, a mixture of tetrahydrofuran and 1.45% by weight (based on the total weight of the eluent) hexamethyldisilazane was used. The columns were Shodex KS-804 and 2xKS-802 and KS-801. The detector was an Agilent 1260 Refractive Index Detector.

Viscosity was measured using a Brookfield rheometer R / S Plus equipped with a Brookfield cone spindle RC3-50-1 at a rotational speed of 3 rpm and a temperature of 25 ° C.

ポリマー１は、ＭＥＲＣＫ Ｐｅｒｆｏｒｍａｎｃｅ Ｍａｔｅｒｉａｌｓ Ｇｅｒｍａｎｙ ＧｍｂＨから、商品名Ｄｕｒａｚａｎｅで販売されている。 Examples A siloxazan polymer consisting of 4 or less monomer units shown in Table 1 was used in Examples:

Polymer 1 is sold by MERCK Performance Materials Germany GmbH under the trade name Durazane.

Preparation of Polymers 2, 4, 5 and 7 (Random Copolymer)
All starting materials were obtained from commercial sources. For example, dichlorosilane is available from Gelest Inc. From USA, dichloro-dimethylsilane is from Sigma-Aldrich and α, ω-dichloro-dimethylsilicone is from ABCR.

General procedure: 1500 g of liquid ammonia was charged into a 4 L pressure vessel at 0 ° C. at a pressure of 3 bar to 5 bar. A mixture of 850 g of dichlorosilane monomer shown in Table 2 was added slowly over 3 hours. The resulting reaction mixture was stirred for a further 3 hours, then the stirring was stopped and the low phase was separated and distilled to remove the dissolved ammonia. After filtration, a colorless viscous oil remained.

Preparation of polymers 3 and 6 (block copolymer)
The starting material was obtained from a commercial source. For example, dichlorosilane and dichloro-dimethylsilane are from Sigma-Aldrich, and α, ω-dichloro-dimethylsilicone is from ABCR.

General procedure: A 2 L flask was charged with 1000 g of n-heptane and a mixture of dichlorosilane monomer and silanol-terminated polydimethylsiloxane (shown in Table 3) under a nitrogen atmosphere. Ammonia was slowly bubbled through this solution at a temperature of 0 ° C. for 6 hours. Precipitation of ammonium chloride was observed. Solid ammonium chloride was removed by filtration to give a clear filtrate, which was then removed by evaporation of the solvent under reduced pressure. A colorless, low-viscosity liquid was obtained.

The molecular weight was analyzed using those under the following GPC conditions: the eluent was a mixture of THF and 1.45 wt% hexamethyldisilazane and the columns were Shodex KS-804 and 2xKS-802 and KS-801. The detector was an Agilent 1260 Refractometer detector. Calibration was performed according to the polystyrene standard.

50-70% by weight surface-modified silicone capped ZrO ₂ nanocrystal dispersion, PCSM23 butyl acetate or xylene is used, which is available Pixelligent Technologies, from USA.

The index of refraction of the encapsulant material was such that a formulation containing a polymer in xylene and a surface-modified silicone capped ZrO ₂ nanocrystals in xylene was spin-coated on a 3-inch Si wafer to a thickness of 1 μm and placed on a hot plate. The film was measured by curing the film at 150 ° C. for 4 hours. The measuring instrument was a Prism Coupler Model 2010 / M manufactured by Metrocon Co., Ltd. at 594 nm and 25 ° C. Tables 4 and 5 show the respective weight ratio of the polymer and the surface-modified ZrO ₂ nanocrystals.

These examples show the effect of adding _{ZrO 2} nanocrystals of refractive index of the hybrid material. It is possible to increase the refractive index to 1.7. The measured index of refraction is very close to the theoretically calculated value, as shown in FIG.

The index of refraction of any material is, to some extent, always temperature dependent. In LED applications, changes in the index of refraction of the encapsulant / binder change the optical conditions. Therefore, the color and brightness of the LED device are temperature dependent. Therefore, a sealing material / binder having a low temperature dependence of the refractive index is preferable. The refractive index usually decreases with temperature changes. As shown in FIG. 6, the material derived from siloxazan exhibits a clearly lower reduction in refractive index when compared to heating of methyl and phenylsilicone.

To demonstrate its usefulness for LED devices, nanoparticles capped with a polymer in butyl acetate and surface-modified silicone in butyl acetate are fluorescee photoconverter particles (isiphor ™ YYG545 200, MERCK KGaA. (Available from) and mixed in a weight ratio range of 1: 2 to 1: 4, and the mixture was spray coated with a 40 μm-80 μm thick layer on the LED chips placed in the LED package (available from Excelitas). .. To cure the polymer, the LEDs were placed on a hot plate at 150 ° C. for 8 hours.

The amount of phosphor on the LED chip was adjusted to have color points of x = 0.350 and y = 0.330 as defined by the CIE. The LED was operated in the atmosphere at a current of 1.5 A for 1000 hours and the change in color coordination was measured. The permissible deviation of general color coordination after 1000 hours is ± 1%. As comparative materials, methyl silicone (OE-6370, Dow Corning, refractive index = 1.41) and phenyl silicone (OE-6550 Dow Corning, refractive index = 1.54) were used. The measured color point deviations are shown in Table 6.

These examples demonstrate the resistance of the encapsulant material under the LED. Methyl silicone has excellent resistance, but is known to have a low index of refraction of only 1.41. Phenylsilicone has a refractive index in the range of 1.54, but their resistance is even lower. As a result, a significant shift in color coordination is observed. The zircoxazan-capped ZrO ₂ encapsulant is more resistant than methyl silicone and can cover a wider range of refractive indexes in the range of 1.45 to 1.70.

The cure properties of pure syroxazan formulations and syroxazan formulations with surface-modified silicone-capped ZrO ₂ nanocrystals are different in different mixing ratios with pure syroxazan formulations and syroxazan-capped ZrO ₂ formulations. Was poured into a flat glass bowl, evacuated under vacuum to evaporate all the solvent to obtain a film thickness of 0.5 mm solvent-free material and compared. Then, the glass bowl was placed on a hot plate at 150 ° C. for 4 hours in the air, and the viscosity of the film was examined (Table 7).

The addition of surface-modified ZrO ₂ nanocrystals accelerates the cure of the zircoxazan polymer, leading to a high-throughput and efficient LED manufacturing process.

In addition, the barrier properties against water vapor are such that the formulation is applied to a 0.2 μm pore size PTFE filter disc and the material is applied for 4 hours at 150 ° C (methyl silicone) or 16 hours at 85 ° C and 85% relative humidity. climate chamber (pure siloxazanes and siloxazane - capped ZrO ₂ formulation), were analyzed by curing. Moisture vapor transmission rate (WVTR) measurements were made by MOCON Permatron-W1 / 50 at a temperature of 38 ° C. and a relative humidity of 90%. The material was applied as a carrier to a PTFE filter disk having a hole size of 0.2 μm and having a film thickness of 100 to 150 μm. The number of methyl silicones was standardized to 100% (Table 8).

As shown in Table 8, the zircoxazan-ZrO ₂ formulation provides better protection against water vapor when compared to pure zircoxazan or methyl silicone formulations. Thus, the formulations according to the invention can better protect the photoconverted particles and cause possible deterioration of the converter material due to moisture (which usually reduces the conversion efficiency of the degraded phosphor and leads to color change). To prevent.

Claims (20)

A polymer comprising a ^first repeating unit M 1 and a second repeating unit M ^{2, and}
Containing surface-modified zirconium dioxide nanocrystals that are at least partially capped with a silicone capping agent,
A formulation in which the first repeating unit M ¹ is represented by formula (I) and the second repeating unit M ² is represented by formula (II).

(In the formula, R ¹ , R ² , R ³ , R ⁴ and R ⁵ are selected from the group consisting of hydrogen, organol and organoheteryl groups independently of each other on each occurrence, and a is an integer from 1 to 60. be) Claimed that the polymer comprises at least one additional repeating unit M ¹ represented by the formula (I) (where at least one additional repeating unit M ¹ is different from the ^first repeating unit M 1). Item 2. The formulation according to item 1. The formulation according to claim 1 or 2, wherein R ¹ and R ² are independent of each other on each appearance and are hydrogen, or alkyl, or phenyl having 1 to 20 carbon atoms. The formulation according to any one of claims 1 to 3, wherein R ³ and R ⁴ are independent of each other on each appearance and are hydrogen, or an alkyl having 1 to 40 carbon atoms, or phenyl. The formulation according to any one of claims 1 to 4, wherein R ⁵ is hydrogen, or an alkyl having 1 to 20 carbon atoms, or phenyl, which are independent of each other on each appearance. Surface-modified zirconium dioxide nanocrystals, said silicone capping agent, Oyo Bibi sulfonyl trimethoxysilane, allyl trimethoxysilane, 1-hexenyl trimethoxysilane, 1-octenyl trimethoxysilane, methyltrimethoxysilane, ethyl Trimethoxysilane, propyltrimethoxysilane, propyltriethoxysilane, n-octyltrimethoxysilane, n-octyltriethoxysilane, n-dodecyltrimethoxysilane, n-dodecyltriethoxysilane, n-hexadecyltrimethoxysilane, and / or octadecyl by a second capping agent from the list consisting of trimethoxysilane Ru is selected, and is at least partially capped, formulation according to any one of claims 1 to 5. The silicone capping agent comprises a head group and a tail group covalently bonded to the zirconium dioxide nanocrystals, wherein the tail group comprises at least a silicone chain, according to any one of claims 1 to 6. The described formulation. The formulation comprises two groups of solvent systems of solvents A) and B), and group A) is one solvent or a mixture of two or more solvents having a boiling point <90 ° C., and group B). The formulation according to any one of claims 1 to 7, which is a mixture of one solvent or two or more solvents having a boiling point> 90 ° C. The formulation according to claim 8, wherein Group A) is selected from the list of esters, ethers, and ketones, and Group B) is selected from the list of esters, ethers, alkanes, and aromatic solvents. The formulation according to any one of claims 1 to 9, wherein the polymer comprising the first repeating unit M ¹ and the second repeating unit M ^{2 is mixed with a surface-modified dispersion of zirconium dioxide nanocrystals.} How to prepare things. (A) providing the formulation according to any one of claims 1-9; and (b) by curing the formulation at a temperature of 70-300 ° C. for 1-24 hours. The resulting encapsulating material for LEDs. An LED comprising the sealing material according to claim 11. Sealing material is contained in the co Nbata layer, LED of claim 12. The LED according to claim 12 or 13, wherein the encapsulating material is included in a converter layer comprising one or more converters selected from a fluorescent material and / or a quantum material. Process:
(A) Apply the formulation according to any one of claims 1-9 to the LED precursor; and (b) cure the formulation at a temperature of 70-300 ° C. for 1-24 hours. A method of manufacturing an LED, comprising: Formulations applied to the LED precursor in step (a) forms a portion of the co Nbata layer, LED method of claim 1 5. 15 or 16, claim 15 or 16, wherein the formulation applied to the LED precursor in step (a) forms a portion of a converter layer comprising one or more converters selected from phosphors and / or quantum materials. LED manufacturing method. The method for producing an LED according to any one of claims 15 to 17, wherein the formulation is applied by spray coating in step (a). The formulation comprises two groups of solvent systems, solvent A) and B), group A) being one solvent or a mixture of two or more solvents having a boiling point <90 ° C., and group B) having a boiling point. The method for producing an LED according to claim 18 , which is a mixture of one solvent or two or more solvents at> 90 ° C. The method for producing an LED according to claim 19 , wherein group A) is selected from a list consisting of esters, ethers, and ketones, and group B) is selected from a list consisting of esters, ethers, alkanes, and aromatic solvents. ..

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